Chemistry test on the topic "Atom structure" is intended to assess the knowledge of students at the rate of "Chemistry". In the test, the correct answers are allocated "+"
1. Isotop atoms have a different number:
-: Protons
+: Neutron
-: electrons
-: No correct answer.
2. The energy level is characterized by a quantum number:
+: Main;
-: orbital;
-: magnetic;
-: spin.
3. The energy of the suite is characterized by a quantum number:
-: Main;
+: orbital;
-: magnetic;
-: Spinov
4. Own rotary electron movement characterizes a quantum number:
-: the main thing;
-: orbital;
-: Magnetic;
+: spin
5. What provision indicates that the distribution of electrons in an unexcited atom occurs so that their total energy is minimal:
+: The principle of the minimum of energy;
-: Pauli principle;
-: Rule Gund
-: no correct answer
6. What provision claims that there cannot be two electrons in the atom with the same set of values \u200b\u200bof all four quantum numbers:
-: the principle of a minimum of energy;
+: Powli principle;
-: Rule Gund
-: no correct answer
7. What provistee proves that in unexcited atoms, electrons within a given subproduction occupies the maximum number of free orbital, while the total spin number is maximum:
-: the principle of a minimum of energy;
-: Pauli principle;
+: Gund rule
-: no correct answer
8. In the periodic system, elements having the same structure of the external electronic layer are combined into
-: periods;
+: groups;
-: Subgroups
-: no correct answer
9. The serial number of elements whose atoms have the same number of energy levels, is:
+: Period;
-: Group;
-: Subgroup
-: no correct answer
10. In groups of atomic radii:
+: increase from top to bottom;
-: rise from the bottom up;
-: differ slightly
-: no correct answer
11. Energy of an electron separation from an element atom with the formation of a cation is:
+: ionization energy;
-: no correct answer
12. Energy of an electron attachment by an element atom to form an anion is:
-: ionization energy;
+: Electron affinity energy;
-: relative electricity
-: no correct answer
13. The value characterizing the ability of an element atom to attract overall electrons in the molecule is:
-: ionization energy;
-: Electron affinity energy;
+: relative electric negatsis
-: no correct answer
14. In the period from left to right:
-: Metal properties increase;
+: The energy of ionization increases;
-: The ionization energy is reduced;
-: Among the answers there is no right
15. With an increase in the sequence number from sodium to chlorine at the elements
-: Metal properties are enhanced;
-: non-metallic properties decrease;
-: Valence in oxygen compounds
decreases;
+: Metal properties are reduced, and non-metallic - enhanced
16. In the group from top to bottom
-: Metal properties are enhanced;
+: Refault properties;
-: Atomic radius reduced;
-: Among the answers there is no right
17. Electron affinity in the period from left to right
-: decreases;
+: increases;
-: does not change
-: no correct answer
18. In the period from left to right, relative electronegility
-: decreases;
+: increases;
-: does not change
-: no correct answer
19. Electrons that are on the orbital shaped orbital
-: D-electrons;
+: S-electrons;
-: F-electrons;
-: P-electrons.
20. Form of orbital P-electrons
-: Sharo-shaped;
+: dumbbell-shaped;
-: Asymmetric dumbbell;
-: Four flower sheet.
21. The fourth energy level contains maximum
-: 8 electrons;
-: 16 electrons;
-: 32 electrons;
+: 36 electrons.
22. With the increase in the sequence number of elements from lithium to the neon number of electrons in the second energy level
-: varies from 9 to 18;
-: varying even number;
-: remains unchanged;
+: varies from 1 to 8.
23. The number of varying electronic pairs on the valence energy level of the nitrogen atom is mainly equal to
24. SC3 + ion corresponds to an electronic configuration
-: 1S22S22P63S23P64S23D3
-: 1S22S22P63S23P64S24P3.
+: 1S22S22P63S23P6.
-: 1S22S22P63S23P64S23D0.
25. In the period with an increase in the sequence number of the elements of metallic properties:
-: change ambiguously
-: Strengthening
+: Weaken
-: do not change
26. On the D-orbitals of one energy level can be maximally located ____ electrons
27. The greatest mass has ...
-: electron
-: Positron
+: Neutron
28. The total electron energy supply in the atom characterizes the quantum number ...
29. The maximum number of unpaired electrons on p-orbitals is ...
30. In the nodes of the crystal lattice of sodium fluoride are located ...
-: NAF molecules
-: Sodium atoms and fluorine molecules
+: ions sodium and fluorine
-: Sodium and fluorine atoms
31. Moletan Molecule has ...... structure
-: Pyramidal
-: Corner
+: Tetrahedrician
-: Linear
32. In row, the strength of communication in molecules ...
-: does not change
-: varies periodically
+: decrease
-: Increases
33. Chemical bond carried out at the expense of one or more electronic pairs, which are strongly interacting with the cores of both connected atoms, is
-: ion connection;
-: Metal communication
-: no correct answer
34. Chemical bond for which the strong interaction of the total electronic pair with the core of only one of the connected atoms is
-: Covalent Communication;
+: ion connection;
-: Metal communication
-: no correct answer
35. The chemical bond characterized by the weak interaction of common electrons with the nuclei of the connectable atoms and the full delooting of these electrons between all atoms is
-: Covalent Communication;
-: ion connection;
+: Metal communication
-: no correct answer
36. Substances with ion bond
+: It is well soluble in water, their solutions and melts are well carried out electricity;
-: poorly conduct electric current,
have a low boiling point;
-: electric current is poorly carried out, poorly dissolved in water;
-: their solutions and melts are well conducted by electric current, poorly dissolved in water
37. ion connection is characterized
-: orientation;
+: Electrostatic interaction
positive and negative ions;
-: saturation;
-: overlapping electronic clouds
38. In molecules of ionic compounds there are elements
+: With low ionization energy and large affinity for the electron;
-: with high ionization energy and low electrofinity;
-: with low ionization energy;
-: With low electronegability value
39. Substances with a non-polar covalent bond
-: focus;
+: satchel;
-: insoluability in water;
-: all the answers are correct
40. Covalent Communication is formed
+: overlapping atomic orbital;
-: electrostatic interaction of positive and negative ions;
-: in metal molecules;
-: In atoms with low ionization energy
41. In the molecule of which compound is a covalent bond on a donor-acceptor mechanism
42. The inaternity of all or some of the physical and chemical properties of the substance in different directions is
+: anisotropy;
-: polymorphism;
-: Isomorphism
-: no correct answer
43. MP + 7 goes into MP + 2 V
+: acidic environment;
-: alkaline medium;
-: neutral environment
-: no correct answer
44. MP + 7 goes to MP + 4 V
-: acidic medium;
-: alkaline medium;
+: neutral environment
-: no correct answer
45. MP + 7 goes to MP + 6 V
-: acidic medium;
+: alkaline medium;
-: neutral environment
-: no correct answer
46. \u200b\u200bThe NF3 molecule has _______ spatial configuration.
-: Triangular
-: Corner
+: Pyramidal
-: Linear
47. Carbon oxide molecule (IV) contains _______ communication.
48. PCL3 molecule, in which phosphorus atom is in SP3 hybrid state, has _______ shape.
+: Pyramidal
-: Linear
-: Corner
-: flat
49. A particle that may be a donor of an electronic pair is ...
50. Unpaired electrons are contained on molecular orbitals in a molecule ...
Planetary model The buildings of the atom were proposed as a result of the opening of the nucleus of the atom of Rutherford: 1. In the center of the atom there is a positively charged kernel, which occupies an insignificant part of the space inside the atom. 2. Then the positive charge and almost all the mass of the atom focuses in its core (the electron mass is 1/1823 a. E. M.). 3. Electrons are rotated by the kernel on closed orbits. Their number is equal to the charge of the kernel. The kernel of the atom atom of the atom consists of protons and neutrons (the general name is nucleons). It is characterized by three parameters: A is a mass number, z - a nucleus charge equal to the number of protons, and N is the number of neutrons in the kernel. These parameters are related to each other by the ratio: A \u003d Z + N. The number of protons in the nucleus is equal to the sequence number of the element. The charge of the nucleus is usually written down to the left of the element symbol, and the mass number is at the top of the left (the nucleus charge is often lowered).
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"Test on the topic" Building atom ""
Test in chemistry on the topic "Building atom"
1. The charge of the iron atom of the iron atom is:
1) + 8; 2) +56; 3) +26; 4)+16.
2. Electronic configuration of the Germany atom:
1) 1S2S2P3S3P3D4S4P.
2) 1S2S2P3S3P3D4S4P.
2 2 6 2 6 10 2 2
3) 1S2S2P3S3P3D4S4P.
4) 1S2S2P3S3P3D4P.
3. Electronic configuration, identical configuration of argon atom, has an ion:
1) 23; 2) 25; 3) 27; 4)55.
7. Sound atom
| 19 K contains: |
1) 19p and 19n 3) 19p and 40n
2) 40p and 19n 4) 19p and 21n.
8. The smallest radius has an atom:
1) s; 2) Al; 3) Cl; 4) AR.
9. The greatest radius Has an atom:
1) BA; 2) MG; 3) CA; 4) SR.
ten. . The smallest radius has an ion:
11. The greatest radius has an ion:
13. The sulfur atom in normal condition and the chromium atom in the maximum excited state have according to the configuration of valence electrons:
14. Numberd.- electrons at the sulfur atom in the maximum excited state is:
1)1; 2) 2; 3) 4; 4) 6 .
15.Chollod.- electrons at ion
| Cu equals: |
1) 6; 2) 8; 3) 9; 4) 10.
16. Number 5.f.- electrons and 6d.- electrons at the Plutonium atom is:1) 5 and 1; 2) 6 and 0; 3) 4 and 2; 4) 5 and 2.
18. The distribution of electrons in the normal state in the chromium atom in the energy levels corresponds to a number of numbers:
1)2, 8, 12, 2; 3) 2, 8, 13,1;
2) 2, 8, 8, 6; 4) 2, 8, 14, 0.
19. Dragging electrons by energy levels in ionFE. 2+ corresponds to a number of numbers:
1)2, 8, 12, 1; 3) 2, 8, 11,2;
2) 2, 8, 13, 0; 4) 2, 8, 10, 3.
20. The valence capabilities of the chlorine atom in normal and excited states correspond to a number of numbers:
1)1, 2, 3, 4; 3) 1, 3, 5, 7;
2) 1, 2, 5, 7; 4) 3, 4, 5, 7.
21. Ordinal numbers chemical elementsarranged in ascending order of their electronegability values:
1)7, 9, 15, 6; 3) 6, 7, 9, 15;
2) 9, 6, 7, 15; 4) 15, 6, 7, 9.
22. The sequence numbers of the chemical elements located in the order of descending the restoration properties of their atoms:
1)1, 2, 3, 5; 3) 3, 1, 6, 9;
2) 3, 5, 6, 1; 4) 2, 3, 6, 1.
24. Natural isotopes have the following importance of mass numbers and prevalence in nature (in% by weight):
25. Relative mass Atom isotope unknown element equal to 39. The number of protons in its kernel is 3 less than the number of neutrons. This element has a symbol:
1) k; 2) CA; 3) ar; 4) cl.
26. Phosphorus atom in an excited state will correspond to the electronic configuration of the external energy level:
27. The location of valence electrons in electronic formulas of copper and zinc atoms in the normal state can be recorded:
28. IonsAG andCS. There are electronic formulas for external and antisomine energy levels, respectively:
29. Element No. 114 was synthesized by Russian scientists. The electronic formula, and the family will be, respectively:
| p-element; | |||||||||
| d-element; | |||||||||
| p-element; | |||||||||
| p-element; |
30. In the following statement, an error was allowed: "All halogens - elementsVII A. Groups and Hallcohes -Via. Groups relate to nonmetallam. " There is an error in the records. Specify it. Nemetallam include:
1) all halogens and all chalcogens
2) all halogens and selenium;
3) all halogens and tellurium;
4) All halogens and polonium.
31. Under the signs of chemical elements in the Mendeleev table, the average values \u200b\u200bof the relative atomic masses of the natural mixture of isotopes are recorded. It is known that in nature there are the following oxygen isotopes:
Why is the value of ar (o) \u003d 15,9994, that is, less than the mass number of the easiest of natural isotopes? Give examples of other natural "abnormalities".
32. All elements in the periodic system have a strictly defined, unambiguous position. The symbol of hydrogen is recorded twice: in IA. group (the most stringent representatives of metals - alkali metal) andVIIA Group (the most striking representatives of non-metals - halogens). Give an expulsion justification of this fact.
The mass number of the oxygen atom is less than the mass of the easiest isotope itself, since there is a large amount of energy in the formation of atom nuclei, which determines the resistance of the atom, and therefore the mass of the nucleus is always somewhat less than the masses of all components of the particle kernel. This phenomenon received the name "Defect of the MASS". Such anomalies are observed at atoms:
| niobium (93NB; | Ar (nb) \u003d 92,9064, | ||
| 104RHB, Ar (Rh) \u003d 102,9055) | |||
A hydrogen atom has one electron at an external energy level, similar to alkaline metals, which easily gives, showing, as well as alkaline metals, rehabilitation properties:
Its oxidative properties are less pronounced than halogen, because The nucleus charge is very small and the attraction of electrons is difficult.
Test on the topic:
The structure of the atom. Periodic law and periodic system of elements D.I. Mendeleev (grade 8)
Option I.
a) increase
b) decrease
c) do not change
a) increase
b) decrease
c) do not change
b) by group number
c) by number number
d) by period of the period
c) the charge of the nucleus of the atom
d) atomic mass
How many energy levels at the scandium atom:
a) 1.
b) 2.
in 3
d) 4.
c) the charge of the nucleus of the atom
a) Metal strengthened
c) do not change
and)Cu. (№29)
b)AG (№47)
in)RB. (№37)
d)AU. (№79)
a) Magnesium
b) aluminum
c) silicon
10. In which element is the most expressed non-metallic properties:
a) oxygen
b) sulfur
c) selenium
11.Where is the main reason for changing the properties of elements in periods:
a) in the increase in atomic masses
12. Which element is headed by the main subgroup of the fifth group:
a) Vanadium
b) nitrogen
c) phosphorus
d) arsenic
13. And equal to the number of orbitald.- Movement:
a) 1.
b) 3.
at 7
d) 5.
14. What is the difference between the atoms of the isotopes of one element:
a) the number of protons
b) neutron number
c) the number of electrons
d) the charge of the kernel
15. What is an orbital:
16. What orbital electron has the highest energy:
and) 1s.
b.) 2s.
in 3s.
d) 2.p.
17. Determine what element it is 1s. 2 2 s. 2 2 p. 1 :
a) №1
b) №3
c) №5
d) number 7.
+15 31 R
a) 31.
b) 16.
c) 15.
e) 46.
s. 2 p. 6 :
a) neon
b) chlorine
c) Argon
d) sulfur
20. Based on the electronic formula, determine which properties element 1 possessess. 2 2 s. 2 2 p. 5 :
a) Metal
b) Nemmetall
c) amphoter
d) an inert element
21. How many chemical elements in the sixth period:
a) 8.
b) 18.
c) 30.
d) 32.
+7 N.
a) 14.
b) 15.
c) 16.
d) 17.
23. The element in the nucleus of the atom of which contains 26 protons:
and)S.
b)Cu.
in)FE.
d)CA.
Option II.
1. What is an orbital:
a) a certain energy level on which the electron is located
b) space around the kernel where electron is located
c) space around the core, where the probability of finding the highest
d) the trajectory in which the electron is moving
2. On which orbital electron has the highest energy:
a) 3r.
b) 4.s.
in 3s.
d) 2.p.
3. Determine what element it is 1s. 2 2 s. 2 2 p. 3 :
a) №1
b) №3
c) №5
d) number 7.
How many energy levels at the chromium atom:
a) 1.
b) 2.
in 3
d) 4.
What are the properties of chemical elements:
a) the value of the relative atomic mass
b) the number of electrons on the outer layer
c) the charge of the nucleus of the atom
d) the number of valence electrons
How to change chemical properties Elements in the period:
a) Metal strengthened
b) non-metallic
c) do not change
d) weaken non-metallic
Specify the element heading a large period of the periodic system of elements:
and)Cu. (№29)
b)AG (№47)
c) K (№19)
d)AU. (№79)
Which element is the most expressed metallic properties:
a) Magnesium
b) aluminum
c) silicon
How the radii of atoms change in the period:
a) increase
b) do not change
c) decrease
How the radii of atoms change in the main subgroups:
a) increase
b) do not change
c) decrease
How to determine the number of energy levels in an element atom:
a) by the sequence number of the element
b) by group number
c) by number number
d) by period of the period
How the place of the chemical element is determined in the periodic system D.I. Mendeleeva:
a) the number of electrons at the external level
b) the number of neutrons in the kernel
c) the charge of the nucleus of the atom
d) atomic mass
13. Which element is the most expressed non-metallic properties:
a) phosphorus
b) nitrogen
c) arsenic
14. What is the main reason for changing the properties of elements in periods:
a) in the increase in atomic masses
b) in a gradual increase in the number of electrons in the external energy level
c) in increasing the number of electrons in the atom
d) in increasing the number of neutrons I ken
15. Which element is headed by the main subgroup of the sixth group:
a) Vanadium
b) oxygen
c) phosphorus
d) arsenic
16. What is equal to the number of orbitals onf.- Movement:
a) 1.
b) 3.
at 7
e) 5.
17. What is the difference between the atoms of the isotopes of one element:
a) the charge of the kernel
b) the number of protons
c) number of neutrons
d) the number of electrons
18. What is equal to the number of neutrons in the atom +15 31 R
a) 31.
b) 16.
c) 15.
d) 46.
19. What an element has the structure of the outer electronic layer ... 3s. 2 p. 5 :
a) neon
b) chlorine
c) Argon
d) sulfur
20. Based on the incomplete electronic formula, determine what properties the element has ... 3s. 2 :
a) Metal
b) Nemmetall
c) amphoter
d) an inert element
21. How many chemical elements in the fourth period:
a) 8.
b) 18.
c) 30.
d) 32.
22. What is equal to the mass number of nitrogen +7 N. which contains 8 neutrons:
a) 14.
b) 15.
c) 16.
d) 17.
23. The element in the nucleus of the atom of which contains 16 protons:
and)S.
b)Cu.
in)FE.
d)CA.
Answers:
Option number 1
1-b, 2-A, 3rd, 4-in, 5-g, 6-g, 7- b, 8-B, 9-A, 10-A, 11-b, 12-b, 13- g, 14-b, 15-in, 16-in, 17-in, 18-b, 19-in, 20-b, 21-g, 22-b, 23-in
Option number 2.
1-in, 2-b, 3-g, 4-g, 5-g, 6-b, 7- in, 8-A, 9-B, 10-A, 11-g, 12-B, 13- b, 14-b, 15-b, 16-in, 17-in, 18-b, 19-b, 20-A, 21-g, 22-A, 23-g
Test work in chemistry grade 11 (UMK O. Gabrielevina a basic level of)
according to the themes "The structure of the atom", the "structure of the substance".
Checked content elements.
Part A contains 16 tasks with a brief response (basic level of complexity).
A1 - Models structure of atoms. Periodic law D. I. Mendeleev, his wording.
A2 - physical meaning structural elements Periodic system in the light of the teaching on the structure of the atom.
A3 - the structure of energy levels and sublevels
A4 - Classification of chemical elements (S, P, D, F)
A5 - electronic atom configurations
A6 - Classification of chemical compounds (oxides and hydroxides)
A7 - Changing the properties of chemical elements in the period and group
A8 is the relationship between the structure of the atom and the formula of the chemical compounds formed.
A9 - isotopes, the composition of their atoms
A10 - Types of Chemical Communications
A11 - Types of Chemical Communications
A12 - Characteristics of Chemical Communications
A13 - Chemical Communication Characteristics
A14 - Types of crystal lattices
A15 - classification of dispersed systems
A16 - Colloid Systems
Part B contains 3 tasks with a detailed response (elevated level of complexity).
B17 is the relationship between the structure of the atom and the composition and properties of the chemical compounds formed.
B18 - the relationship between the composition chemical compound and communication types and crystal lattice in him.
B19 - calculation of the mass fraction of the dissolved substance in solution
Option 1
Part A (answer to tasks 1-16 is one digit)
1) The model "Pudding with raisins" atom was proposed
AND). N. Bloom b). E. Renford c). J. Thomson d). D. Chadwig.
2) The sequence number of the element in the periodic system determines:
AND). Atom's nucleus charge.
D). Number of neutrons in the atom.
AND). B and Si. B). S and S. IN). K and sa. D). Mn and Fe.
4) S-element is:
AND). Barium. B). Americium. IN). Gallium. D). Vanadium.
5) Electronic configuration ... 3D64S2 corresponds to the element:
A). Argon. B). Gland. IN). Krypton. D). Ruthenium
AND). BE (OH) 2. B). H2SIO3. IN). MG (OH) 2. D). BA (OH) 2.
AND). SR-RB-K. B). Na-k-Ca. IN). Na-K-CS. D). AL-MG-BE.
8) EL element with electronic formula 1S22S22P63S23P3 forms the highest oxide corresponding to the formula:
AND). E2O. B). E2O3. IN). EO2. D). E2O5.
9) Iron isotope, the kernel of which contains 28 neutrons, designate:
ten). Formula of substance with a covalent polar bond:
A) CL2. B). KCL. IN). NH3. D). O2.
11) The substance between the molecules of which is hydrogen bond, is:
AND). Ethanol. B). Methane. IN). Hydrogen. D). Benzene.
12). Number of common electronic pairs in hydrogen molecule:
13) The polarity of chemical bond increases into a number of compounds, the formulas that:
AND). NH3, HI, O2. B). CH4, H2O, HF. IN). PH3, H2S, H2. D). HCl, CH4, CL2.
14) Magnesium chloride crystal grille:
15) Milk is:
16) spontaneous reduction in the volume of the gel, accompanied by a liquid separation, is called
Part B.
17). Make an electronic formula of the element with sequence number 32 in the periodic system. Take the conclusion about the accessories of this item to metals or nonmetallam. Record the formula for its highest oxide and hydroxide, indicate their character.
18) Make the formation schemes of compounds (electronic and structural formula) consisting of chemical elements a). Silicon and chlorine. B). Sodium and nitrogen. Specify the type of chemical bond and the type of crystal lattice in each connection.
19) in 280 g of a 15% solution of zinc chloride was dissolved by 12 g of the same salt. What is the mass of zinc chloride in the resulting solution?
Option 2.
Part A.
1) the planetary model of the atom was proposed
AND). D.Melteleev. IN). J. Thomson.
B). E. Renford. D). D. Chadwig.
2) the period number in the periodic system determines:
AND). Atom's nucleus charge.
B). The number of electrons in the outer layer of the atom.
IN). The number of electron layers in the atom.
D). The number of electrons in the atom.
3) a pair of elements having a similar structure of external and antisomine energy levels:
AND). S and CL. B). BE and B. B). KR and XE. D). Mo and SE.
4) P-element is:
AND). Scandium. B). Barium. IN). Arsenic. D). Helium.
5) Electronic configuration ... 3D104S2 corresponds to the element:
A). Calcium. B). Krypton. IN). Cadmium. D). Zinc.
6) Amphoteric hydroxide is a substance that the formula is:
AND). Zn (OH) 2. B). MG (OH) 2. IN). CA (OH) 2. D). CR (OH) 2.
7) A number of elements located in the order of increasing metal properties:
AND). Mg-Ca-Zn. B). Al-Mg-Ca. IN). SR-RB-K. D) .ge-Si-SB.
8) EL element with electronic formula 1S22S22P63S23P63D104S24P1 forms the highest oxide corresponding to the formula:
9) calcium isotope, the kernel of which contains 22 neutrons, designate:
AND). HCl. B). KBR. IN). P4. D). CH3OH.
AND). Potassium oxide. B). Copper. IN). Silicon. D). Magnesium hydroxide.
12). The number of common electronic pairs in the nitrogen molecule:
AND). One. B). Two. IN). Three. D). Four
AND). CL2, H2S, CO2. B). NH3, PH3, SO2. IN). HCl, HBr, Hi. D). BH3, NH3, HF.
14). Crystalline silicon oxide lattice (IV):
AND). Atomic. B). Metal. IN). Ionic. D). Molecular.
15). Enamel paint is:
AND). Suspension. B). Emulsion. IN). Sol. D). Gel.
16). Camping of colloidal particles is
AND). Coagulation. B). Sedimentation. IN). Syneresis. D). Tyndal effect.
Part B.(Tasks 17-19 require a detailed decision)
17). Make the electronic formula of the element with the sequence number 30 in the periodic system. Take the conclusion about the accessories of this item to metals or nonmetallam. Record the formula for its highest oxide and hydroxide, indicate their character.
eighteen). Make a diagram of the formation of compounds (electron and structural formula) consisting of chemical elements a). Nitrogen and hydrogen. B). Sodium and chlorine. Specify the type of chemical bond and the type of crystal lattice in each connection.
19) Mixed 80 g of sodium nitrate solution with a mass fraction of 5% and 200 g of an 8% solution of the same salt. What is the percentage salt concentration in the resulting solution?
Option 3.
Part A.(response to tasks 1-16 is one letter)
1) The quantum model of the atom was proposed
A) N. Bloom. B) D.Mendeleev. C) G.Mali. D) D. Chadwig.
2) the group number (for the elements of the main subgroups) in the periodic system determines:
AND). The number of protons in the atom.
B). The number of electrons in the outer layer of the atom.
IN). The number of electron layers in the atom.
D). Number of neutrons in the atom.
3) a pair of elements having a similar structure of external and antisomine energy levels:
AND). Ba and K. b). SB and BI. IN). Ti and GE. D). KR and FE.
4) D-element is:
AND). Potassium. B). Silicon. IN). Argon. D). Copper.
5) Electronic configuration ... 3D54S2 corresponds to the element:
A). Bromo. B). Calcium. IN). Manganese. D). Chlorine.
6) amphoteric oxide is a substance that the formula of which is:
AND). CO. B). CR2O3. IN). CRO3. D). Feo.
7) A number of elements located in the order of increasing metal properties:
AND). Al-Ga-GE. B). CA-SR-BA. IN). K-Na-Li. D). Mg-Ca-Zn.
8) EL element with electronic formula 1S22S22P63S23P1 forms the highest oxide corresponding to the formula:
AND). EO. B). E2O3. IN). E2O5. D). EO3.
9) Iron isotope, the kernel of which contains 30 neutrons, designate:
AND). 54 / 26Fe. B). 56 / 26Fe. IN). 57 / 26Fe. D). 58 / 26Fe.
10) Formula of substance with a covalent non-polar connection:
AND). MgCl2. B). HF. IN). N2. D) .al.
eleven). The substance between the molecules of which there is a hydrogen bond, it is:
AND). Oxygen. B). Ethane. C) sodium. D). Ethanal.
12). Number of common electronic pairs in fluorine molecule:
AND). One. B). Two. IN). Three. D). Four
thirteen). The polarity of chemical bond decreases in a number of compounds, the formulas that are:
AND). Hi, HCl, HF. B). HBR, O2, H2S. C) .nh3, h2s, ch4. D). H2O, PH3, HI.
14). Crystal lattice sucrose:
AND). Atomic. B). Metal. IN). Ionic. D). Molecular.
15). Blood plasma is:
AND). Suspension. B). Emulsion. IN). Sol. D). Gel.
16). The development of large colloid particles under the action of gravity is called
AND). Coagulation. B). Sedimentation. IN). Syneresis. D). Tyndal effect.
Part B.(Tasks 17-19 require a detailed decision)
17). Make the electronic formula of the element with the sequence number 38 in the periodic system. Take the conclusion about the accessories of this item to metals or nonmetallam. Record the formula for its highest oxide and hydroxide, indicate their character.
18). Suggest the formation schemes of compounds (electronic and structural formula) consisting of chemical elements a). Magnesium and fluorine. B). Carbon and oxygen. Here, the type of chemical bond and the type of crystal lattice in each connection.
19) (4 points) mixed 120 g of 2.5% sodium sulfate solution and 10g 5% solution of the same salt. What is the mass of sodium sulfate in the resulting solution?
Option 4.
Part A.(response to tasks 1-16 is one letter)
1) "The charge of the nucleus of the atom of each element in the Mendeleev table increases by one compared with the charge of the nucleus of the atom of the previous element," is the wording of the law
A) G.Pauli. B). E. Renford. C) D.Melteleeva d) G.Mali
2) the total number of neutrons in the kernel of an element atom is equal
AND). Solar kernel.
B). Atomic mass.
C). The diffuses atomic mass and the sequence number.
D). Order number
3) a pair of elements having a similar structure of external and antisomine energy levels:
A) .na and Li. B). CL and BR. IN). Zn and Ca. D). Mn and Fe.
4) D-element is:
AND). Germanium. B). Cadmium. IN). Selenium. D). Uranus.
5) Electronic configuration ... 4S24P6 corresponds to the element:
A). Bromo. B). Gland. IN). Neon. D). Krypton.
6) Amphoteric hydroxide is a substance that the formula is:
AND). GE (OH) 4 b). MG (OH) 2. IN). Lioh. D). Si (OH) 4.
7) A number of elements located in the order of increasing metal properties:
AND). K-RB-SR. B). AL-MG-BE. IN). BE-LI-CS. D) .ge-SN-SB.
8) EL element with electronic formula 1S22S22P63S23P63D104S24P4 forms the highest oxide corresponding to the formula:
AND). E2O. B). E2O3. IN). EO2. D). EO3.
9) Calcium Isotope, which contains 24 neutrons in the kernel, denote:
AND). 40/20CA. B). 42 / 20ca. IN). 44/20CA. D). 48/20CA.
10) Formula of substance with a metal tie:
AND). O2. B). H2O. IN). CA. D) .nh3.
eleven). Substance only with a covalent polar bond:
AND). Fluoropod. B). Chlorine. C). Sodium peroxide. D). Sodium fluoride.
12). The number of common electronic pairs in the bromium model molecule:
AND). One. B). Two. IN). Three. D). Four
thirteen). (2 points). The polarity of chemical bond decreases in a number of compounds, the formulas that are:
AND). PH3, HCl, HF. B). HF, H2O, NH3. IN). CH4, PH3, H2O. D). H2O, HI, NH3.
14). Crystal White Phosphorus Grid:
AND). Atomic. B). Metal. IN). Ionic. D). Molecular.
15). Crying, tendons - it is:
AND). Suspension. B). Emulsion. IN). Sol. D). Gel.
16).. True solutions include homogeneous systems with a phase particle size
AND). More than 100nm. B). Less than 1 nm. IN). From 1 to 100 nm g). The size does not matter.
Part B.(Tasks 17-19 require a detailed decision)
17). Save the electronic formula of the element with the sequence number 34 in the periodic system. Take the conclusion about the accessories of this item to metals or nonmetallam. Record the formula for its highest oxide and hydroxide, indicate their character.
eighteen). Make a diagram of the formation of compounds (electron and structural formula) consisting of chemical elements a). Sulfur and hydrogen. B). Sodium and oxygen. Specify the type of chemical bond and the type of crystal lattice in each connection.
19) 8% Sodium acetate solution weighing 200 g diluted 120 ml of water. What is the percentage salt concentration in the resulting solution?
Option 5.
Part A.(response to tasks 1-16 is one letter)
1) "The properties of chemical elements and compounds formed by them are in periodic dependence on their relative atomic masses" - this is the wording of the law
A) .g.puli. B.) E. Rereford. IN). D.Mendeleeva d) .g.Mali
2) The total number of electrons in the element atom is determined using the periodic system, by number:
AND). Groups. B). Period. IN). Row. D). Sequence number.
3) a pair of elements having a similar structure of external and antisomine energy levels:
AND). SN and PB. B). AS and SE. IN). Zn and Ca. D). Mo and Te.
4) F-element is:
AND). Germanium. B). Calcium. IN). Samarium. D). Lanthanum
5) Electronic configuration ... 5S25P4 corresponds to the element:
A). Zirconia. B). Molybdenum. IN). Telluri. D). Tin.
6) Amphoteric hydroxide is a substance that the formula is:
AND). Fe (OH) 3. B). MG (OH) 2. IN). Lioh. D). RBOH.
7) A number of elements located in the order of increasing metal properties:
AND). K-CS-BA. B). AL-MG-BE. IN). BE-Li-Al. D) .GE-SN-PB.
8) E E with electronic formula 1S22S22P63S23P63D104S24P2 forms the highest oxide corresponding to the formula:
AND). E2O. B). E2O3. IN). EO2. D). EO3.
9) Titan's isotope, the kernel of which contains 22 neutrons, designate:
AND). 40/22Ti. B). 42/22Ti. IN). 44/22Ti. D). 48/22ti.
10) Formula of substance with ion bond:
AND). NaCl. B). HBr. IN). P4. D). CH2O.
11). Ownership with a metal tie:
AND). Calcium oxide. B). Mercury. C) .mmiak. D). Aluminum hydroxide.
12). The total electronic pairs in the water molecule:
AND). One. B). Two. IN). Three. D). Four
thirteen). The polarity of chemical bond decreases in a number of compounds, the formulas that are:
AND). CL2, H2S, SO2. B). ASH3, NH3, PH3 ,. IN). HF, HCl, HBr,. D). BH3, NH3, BF3.
14). Crystal cast iron grille:
AND). Atomic. B). Metal. IN). Ionic. D). Molecular.
15). Smoke is:
AND). Suspension. B). Emulsion. IN). Sol. D). Spray can.
16). Education of a luminous cone when passing through a colloidal solution of the beam of light is called
AND). Coagulation. B). Sedimentation. IN). Syneresis. D). Tyndal effect.
Part B.(Tasks 17-19 require a detailed decision)
17). Save the electronic formula of the element with the sequence number 37 in the periodic system. Take the conclusion about the accessories of this item to metals or nonmetallam. Record the formula for its highest oxide and hydroxide, indicate their character.
eighteen). Make a diagram of the formation of compounds (electron and structural formula) consisting of chemical elements a). Carbon and chlorine. B). Barium and oxygen. Specify the type of chemical bond and the type of crystal lattice in each connection.
19) 200 g 10% sulfuric acid solution heated. In this case, 20 ml of water was evaporated. What is the percentage concentration of acid in the resulting solution?
Evaluation of work.
For the correct answer in part A - 1 point
For the full correct answer in part b:
B17 - 6 points, B18 - 8 points, B19 - 3 points. Total maximum 33 points.
Criteria estimation B17:
Compiled electronic formula element 1 score;
It is concluded about belonging to metals or nonmetallam - 1 point;
Molecular formulas of oxide and hydroxide are recorded - 1 point for each;
The character of oxide and hydroxide is indicated - 1 point for each; (only 6 points)
Criteria estimation B18:
Compiled electronic compound formula - 1 point for a and b;
A structural formula of the compound is composed - 1 point for A and B;
The types of communication in the compound - 1 point for A and B are indicated;
The type of crystal lattice is indicated - 1 point for A and B; (total 8 points)
Criteria estimation B18:
The mass of solutes was determined in the initial solutions - 1 point;
The mass of the resulting solution is determined - 1 point;
The mass / mass fraction of the solute was determined in the resulting solution - 1 point; (Total 3 points). * If a computing error is made at any stage of calculations, but the solution is correct, then 1 point is removed.
Calculation scale primary ballots in a mark
The key to check
| Quest Number | Option 1 | Option 2. | Option 3. | Option 4. | Option 5. |
| IN | B. | AND | G. | IN | |
| AND | IN | B. | IN | G. | |
| B. | IN | B. | B. | AND | |
| AND | IN | G. | B. | IN | |
| B. | G. | IN | G. | IN | |
| AND | AND | B. | AND | AND | |
| IN | B. | B. | IN | G. | |
| G. | B. | B. | G. | IN | |
| AND | B. | B. | IN | IN | |
| IN | B. | IN | IN | AND | |
| AND | B. | G. | AND | B. | |
| AND | IN | AND | AND | B. | |
| B. | IN | IN | B. | IN | |
| IN | AND | G. | G. | B. | |
| B. | AND | IN | G. | G. | |
| IN | AND | B. | B. | G. | |
| ... 3D104S24P2 Metal, Geo2, GE (OH) 4 - amphoter | ... 3D104S2. Metal, ZNO, Zn (OH) 2 - amphoteric | ... 4D105S2. Metal, sro, SR (OH) 2 - Basic | ... 3D104S24P4 Nemetall, SEO3, H2SEO4 - acidic | ... 4d105s1 Metal, RB2O, RBOH - Main |
|
| A (SiCl4) -Connerable polar, molecular; B (na3n) - ion, ionic | A (NH3) -Connerable polar, molecular; B (NaCl) - ion, ionic | A (MGF2) -Ionny, ionic B (CO2) - covalent polar, molecular; | A (H2S) -Connerable polar, molecular; B (Na2O) - ion, ionic | A (CCl4) -Connerable polar, molecular; B (Bao) - ionic, ionic |
|
| 280 * 0.05 +12 \u003d 54g | (80*0,05 + 200*0,08)/ (200+80)=7,14% | 120 * 0.025 + 10 * 0.05 \u003d 3.5G | 200*0,08/(200+ 120)=5% | 200*0,01/(200-20*1)=11% |
Option
3. Relate:
Chemical elements atoms
A) Al b) br c) Fe d) SE
The number of protons in the nucleus of the atom
4. Relate:
Chemical element
1) 2) 3) 4) 5) 6)
6. Relate:
Chemical element
A) bromo b) oxygenC) manganese d) chrome
1) 1 2) 2 3) 3 4) 4
1) 3)
9 +15
2 7 5 8 2
2) 4)
8 +15
2 6 2 8 5
1) F and Br 3) SE and P
2) S and CL 4) K and CA
Test "The structure of an atom. An electronic shell atom "
Option
2. Are the following statements true?
1) is true only and 2) true only b 3) are true of both judgments 4) both judgments are not true
3. Relate:
Chemical elements atoms
A) na b) f c) cu d) p
The number of protons in the nucleus of the atom
4. Relate:
Chemical element
Designation of the chemical element
1) 2) 3) 4) 5) 6)
6. Relate:
Chemical element
The number of electrons in the atom.
1) number of group 2) period number 3) charge kernel 4) sequence number
1) 1 2) 2 3) 3 4) 4
1) 3)
16 +16
2 8 6 6 8 2
2) 4)
9 +15
2 7 2 8 5
10. Same number Electrons at the external level have atoms:
1) Ba and Si 3) n and f
2) Mg and Ba 4) br and c
Test "The structure of an atom. An electronic shell atom "
Option
1. Relate:
Chemical element
A) magnesium b) hydrogen B) sulfur d) sodium
Designation of the chemical element
1) 2) 3) 4) 5) 6)
2. Atom of which chemical element consists of 7 protons, 7 electrons, 7 neutrons?
1) Lithium 2) silicon 3) chlorine 4) nitrogen
3. Relate:
Chemical element
A) bromo b) oxygenC) manganese d) chrome
The number of electrons in the atom.
1) 25 2) 8 3) 35 4) 24 5) 80 6) 16
4. The element of the fourth period of the II group of the main subgroup of PSHE is:
1) sodium 2) potassium 3) calcium 4) carbon
5 . Are the following statements true?
A. The core of the atom consists of protons and electrons.
B. The charge of the atom nucleus is equal to the sequence number of the element in the periodic system of the chemical elements of D.I. REMEELEEVA.
1) is true only and 2) true only b 3) are true of both judgments 4) both judgments are not true
6. Relate:
Chemical elements atoms
A) Al b) br c) Fe d) SE
The number of protons in the nucleus of the atom
1) 34 2) 56 3) 13 4) 35 5) 27 6) 26
7. The same number of electrons at the external level have atoms:
1) F and Br 3) SE and P
2) S and CL 4) K and CA
8. The number of energy levels (electronic layers) in the electronic sheath of the atom is equal
1) number of group 2) period number 3) charge kernel 4) sequence number
9. In the electronic shell of the magnesium atom, the number of energy levels is:
1) 1 2) 2 3) 3 4) 4
10. The phosphorus atom corresponds to the electronic circuit:
1) 3)
9 +15
2 7 5 8 2
2) 4)
8 +15
2 6 2 8 5
Test "The structure of an atom. An electronic shell atom "
Option
1. Relate:
Chemical element
A) potassium b) silver c) silicon d) oxygen
Designation of the chemical element
1) 2) 3) 4) 5) 6)
2. Atom of which chemical element consists of 12 protons, 12 electrons, 12 neutrons?
1) carbon 2) magnesium 3) sulfur 4) nitrogen
3. Relate:
Chemical element
A) calcium c) sulfur b) chloride d) cobalt
The number of electrons in the atom.
1) 17 2) 27 3) 16 4) 32 5) 20 6) 40
4. The element of the third period of the group of the main subgroup of PSHE is:
1) Nitrogen 2) phosphorus 3) aluminum 4) carbon
5 . Are the following statements true?
A. The nucleus of the atom consists of protons and neutrons.
B. The number of neutrons in the nucleus of the atom is equal to the sequence number of the element in the periodic system of chemical elements of D.I. REMEELEEVA.
1) is true only and 2) true only b 3) are true of both judgments 4) both judgments are not true
6. Relate:
Chemical elements atoms
A) na b) f c) cu d) p
The number of protons in the nucleus of the atom
1) 23 2) 15 3) 11 4) 9 5) 19 6) 29
7. The same number of electrons at the external level have atoms:
1) Ba and Si 3) n and f
2) Mg and Ba 4) br and c
8. The number of electrons at the external energy level of atoms of the elements of the main subgroups is equal
1) number of group 2) period number 3) charge kernel 4) sequence number
9. In the electron shell of the silicon atom, the number of energy levels is:
1) 1 2) 2 3) 3 4) 4
10. The sulfur atom corresponds to the electronic circuit:
1) 3)
16 +16
2 8 6 6 8 2
2) 4)
9 +15