Practical work in chemistry 10 cl. "Obtaining ethylene and experiments with it"

Goal:

Equipment:

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“Chemistry Grade 10 Practical work №2. "Obtaining ethylene and experiments with it" "

Practical work 2.

"Obtaining ethylene and experiments with it"

Goal:

to consolidate the knowledge of students on the topic “Alkanes. Alkenes ”, teach how to get ethylene and carry out experiments with it;

improve the ability to obtain gaseous substances in the simplest devices, observing safety rules;

foster a sense of responsibility, collectivism.

Equipment: on students' tables: a laboratory tripod with a foot, an alcohol lamp, matches, test tubes in a tripod, a gas outlet tube, sand, bromine water, potassium permanganate solution, ethanolconcentrated sulphuric acid.

During the classes

1. Safety briefing under signature.

Then together we analyze the course of practical work point by point, I stop

in detail on the utmost care when carrying out practical work.

2. Students begin to draw up practical work in exercise books for

practical work: write down the number, topic, purpose, equipment.

3. Then do practical work. The issued test tube with a ready

a mixture of ethyl alcohol (2 - 3 ml), concentrated sulfuric acid

(6 - 9 ml) and calcined sand is closed with a gas outlet tube, strengthened

in a laboratory rack and begin to gently heat, starting with warming up

the whole tube.

a) C 2 H 5 OH → H 2 C \u003d CH 2 + H 2 O

ethyl alcohol ethylene

The end of the gas outlet tube is lowered into a test tube, into which 2-3 ml is poured

bromine water. After a while, the emitted gas discolours

bromine water. This means that there was chemical reaction, and formed

new substance:

b) H 2 C \u003d CH 2 + Br 2 → CH 2 Br - CH 2 Br

ethylene 1,2 - dibromoethane

4. After the bromine water has become discolored, pour 2-3 ml into another tube

dilute solution of potassium permanganate acidified with sulfuric acid,

and also pass the resulting gas through it. Over time

the color disappears, the solution becomes transparent, it means also here

a chemical reaction occurred and a new substance was formed:

H 2 C \u003d CH 2 + [O] + H 2 O → CH 2 - CH 2

ethylene ׀ ׀

ethylene glycol

5. After the performed experiments, remove the gas outlet tube from the test tube and

set fire to escaping gas, it burns with a glowing flame. Ethylene, like everything

hydrocarbons burn to form carbon dioxide and water:

C 2 H 4 + 3O 2 → 2CO 2 + 2H 2 O

6. After finishing work on the desktop, put things in order and proceed to

design of work in a notebook: describe the entire course of work, sketch

figure 19 on page 56, write the equations of the corresponding

reactions, at the end of the work draw a conclusion, while answering all the questions for

independent conclusions, at the end of the lesson notebooks are submitted for verification.

grade 10 students

_____________________________

Laboratory experiments

Laboratory experiment No. 1date _________

Determination of elemental composition organic compounds

Goal: learn to determine the elementary composition of organic substances.

Equipment and reagents: beaker, paraffin candle, splinter, lime water.

Working process

What they were doing

What was observed

Conclusion

Laboratory experiment No. 2date _________

Making models of hydrocarbon molecules.

Goal: learn to assemble models of the simplest hydrocarbons.

Equipment and reagents: plasticine of 2 colors, matches.

Content and order of the experiment see the textbook by O.S. Gabrielyan Chemistry 10 ( a basic level of) p. 174.

Working process:

Picture

Description of the building

Methane molecule model

Butane Molecule Model

Isobutane Molecule Model

Conclusion .....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Laboratory experiment No. 3date _________

Detection of unsaturated compounds in liquid petroleum products.

Goal: learn to detect unsaturated compounds in liquid petroleum products.

Equipment and reagents: liquid petroleum products, iodine solution, potassium permanganate solution.

Content and order of the experiment

Working process

p / p

Reagents for substance recognition

Observations

conclusions

Potassium permanganate solution

Iodine solution

Laboratory experiment No. 4date _________

Obtaining and properties of acetylene.

Goal: study the laboratory method for obtaining acetylene, find out its properties.

Equipment and reagents: test tubes, stopper with gas outlet tube, stand, water, calcium carbide, potassium permanganate solution.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.175.

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed:

……………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Laboratory experiment No. 5date _________

Acquaintance with the collection "Oil and products of its processing".

Goal: familiarization with the collection "Oil and products of its processing".

Equipment and reagents: collection "Oil and products of its processing".

Content and order of the experiment see the textbook by OS Gabrielyan Chemistry 10 (basic level) pp. 175-176.

Working process

№ p / p

Sample

Colour

Formula

Processes underlying production

Laboratory experiment No. 6date _________

Properties of ethyl alcohol.

Goal: study the properties of ethyl alcohol.

Equipment and reagents: ethyl alcohol, distilled water, sunflower oil, copper wire, test tubes, spirit lamp, filter paper.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.176.

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed:

Laboratory experiment No. 7date _________

Glycerin properties.

Goal: study the properties of glycerin.

Equipment and reagents: distilled water, glycerin, alkali solution (NaOHII)), test tubes.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.174.

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed:

…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Laboratory experiment No. 8date _________

Formaldehyde properties.

Goal: study the properties of formaldehyde.

Equipment and reagents: ammonia solution of silver oxide, formalin, alkali solution (NaOH), a solution of copper sulfate (copper sulfate (II)), test tubes, a glass with hot water.

Content and order of the experiment

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed:

Laboratory experiment No. 9date _________

Acetic acid properties.

Goal: study the properties of acetic acid.

Equipment and reagents: acetic acid solution, litmus solution, alkali solution (NaOH), zinc (granules), copper oxide (II), chalk or soda, test tubes.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.177.

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed:

Laboratory experiment No. 10date _________

Properties of fats.

Goal: study the properties of fats.

Equipment and reagents: distilled water, alcohol, gasoline, sunflower oil, test tubes, filter paper,

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) pp. 177 - 178.

Working process

What they were doing

What was observed

Conclusion

Laboratory experiment No. 11 date _________

Comparison of the properties of soap and washing powder solutions.

Goal: compare the properties of soap and detergent solutions.

Equipment and reagents: soap solution, washing powder solution, phenolphthalein solution, hard water (calcium chloride solution), test tubes.

Content and order of the experiment

Working process

What they were doing

What was observed

Conclusion

When do you have to add more solution to form a stable foam? ………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………

Which product does not lose its detergency in hard water? Why? ………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………

Laboratory experiment No. 12date _________

Properties of glucose.

Goal: study the properties of glucose.

Equipment and reagents: glucose solution, copper sulfate solution (copper sulfate (II)), alkali solution (NaOH), ammonia solution of silver oxide, test tubes, alcohol lamp.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.178.

Working process

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed: …………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………… ………………………………………………………………………………………

Laboratory experiment No. 13date _________

Starch properties.

Goal: study the properties of starch.

Equipment and reagents: starch powder, water, a glass of hot water, an alcohol solution of iodine, test tubes, an alcohol lamp.

Content and order of the experiment

Working process

What they were doing

What was observed

Conclusion

Laboratory experiment No. 14date _________

Protein properties.

Goal: study the properties of proteins.

Equipment and reagents: protein solution, alkali solution (NaOH), a solution of copper sulfate (copper sulfate (II)), nitric acid solution, ammonia solution, woolen thread, water, test tubes, alcohol lamp.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.179.

Working process

What they were doing

What was observed

Conclusion

Laboratory experiment No. 15date _________

Acquaintance with samples of plastics and rubbers.

Goal: familiarization with samples of plastics and rubbers.

Equipment and reagents: samples of plastics, fibers, rubbers.

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.179.

Working process

Substance groups

Sample

The reaction of obtaining

polymerization

polycondensation

Natural

Artificial

Synthetic

Practical work

Practical work No. 1date __________

Identification of organic substances.

goal :…………………………………………………………………………………………..……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) p.180 -181.

Exercise 1.

Option number ____

Equipment and reagents: ………………………………………………………………………………….

Working process:

What they were doing

What was observed

Conclusion

Write down the equations of the reactions performed: …………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………

Task 2.

Equipment and reagents: glucose solution, ………………………………………………………….

…………………………………………………………………………………………………………………

Working process:

What they were doing

What was observed

Conclusion

Task 3.

Equipment and reagents: a solution of glycerin, formaldehyde, glucose, ……………………………

…………………………………………………………………………………………………………………

Working process:

What they were doing

What was observed

Conclusion

Task 4.

Equipment and reagents: potatoes, white bread, ripe apple, …………………………………… ..

…………………………………………………………………………………………………………………

Working process:

What they were doing

What was observed

Conclusion

Mark ___________

Practical work number 2date __________

Recognition of plastics and fibers.

goal :…………………………………………………………………………………………..……………………………………………………………………………………………………………………………………………………………………………………………………

Content and order of the experiment see O.S. Gabrielyan's textbook Chemistry 10 (basic level) pp. 181 - 182.

Exercise 1.

Equipment and reagents: polyethylene, polyvinyl chloride.

Working process:

Formula

Description

Polyethylene

Polyvinyl chloride

Task 2.

Equipment and reagents: cotton, wool, acetate fiber, nylon, …………………………………………………………………………………………………………… … ..

Working process:

Formula

Description

Cotton

Wool

Acetate fiber

Nylon

Mark ___________

References:

O.S.Gabrielyan "Chemistry. 10 class." basic level, Moscow: Bustard, 2012

Our robot recognized:
Practical work 3

Whose properties of carboxylic acids

WhatSyashn Nob1yudin Reaction Equation Conclusion

Alacha 1. Obtaining acetic acid

12-3 1 pis - in a test tube - 6e Acetic acid -

Ala sodium receiver gSNLaHZha N-80-tu can be obtained

I roll 2, accumulate -2СНСО0Н Na-30, chii. um her salt.

And the room - and colorless - displacing sulfur

Ranny cash liquid acid. So

Yarn knob-bone with a rare method

L01Y. For tapas you can get

I tear pro .404 to other carbo-

Trial acid tag.

She and Guyot-

Yudkoy pipe

Oh end

\u003e push and

1 true pro

Tirku. H\u003e

Alacha 2. Injection of inert acid with a certain metal

I am in ra! Y1, K1L.H hey acid:

0 shavings very boring- Uz - 2СН\u003e ССОК- Metals react-

Aponos release -CH, SOO; Kd N; Truut with carbonic knetotamines

Aa; К9в2СН, С0О, 2Н - gsvzsosg + mzk as well as with neor-

Talikimn. On-

Md 2K-Xd: N example, in provs-

Lsiiyh reactions:

Hydrogen ions.

Formed

Phi dissociation

Acetic acid.

Oxidize atocha

Zinc and small, restore

B gtmnu.ty slow gp gen.sooo; -

Iinka vylslenne 1.11-1 -CH, C00: 2n N-T 2n02sn, co2n - 2sn, coor-n: the body activity of magnesium is greater than that of zinc, then the rate

What is dechago NipncMmim Reaction equation 1 Out / n

2p2N2G. H reactions with magnesium I1.ShK-

Alacha 3. B aimoleic acid with bases

To the solution, the solution of NAOY - Xa0H Solution of phenol

Gnlroxil turns pink, and phthalein 1yul leu-

Sodium do - with the addition of MaOH CHtCOOH - with OH ions

Bavlyayu neleni ki - SNSOOa N.O royunest. When before-

How many casts are added

Pel phenol - colored ОНstСООН - + gilrox il-nony

Phtaleina, in -\u003e CH:, SOOCH-Na + NgO are removed poke IOIV-

Then with hydrogen vinegar. Those.

Nuic acid OH + H - H: 0 acetic ACID reacts with bases as mineral acids, forming the apegaOnvodu salt.

Alacha 4. VmimodsAstais of acetic acid sospnr gam and

In test tubes with 0 X. When interacting

Solution H: 50; state of the xus

Acetic CHSN, OH C-CH-- acids with alcohol

Acids / tami are formed

I'm pouring in: in it complex Ethers -

One - eta- 0 // -\u003e CH, - C + H-0 0 - C; H-, ethyl ester of acetic acid volatile liquid

Nol, and the other is ISO si with characteristic apaches.

Pengyl alcohol. When adding the received\u003e firs to saturation

Il; from:; /: 1 :: eq. with a solution of N30 mixed

Then and both

Tubes will be sent to:

I put the horse at the top to form

The ether layer is centered.

Noah vinegar and the bottom layer -

Acids. water, or rather acid and chloride

I close the selection

Stoppers with sowing sodium vapor. Occur-

The pipes and-ho-kondsnenru are sweating

They are lodging in the same way that they are

Mi. I'm heating up. lnlmshklx 11 nost of received

WhatOelat On / PkhUeniya\u003e Equalization of reaction VyvoO

Dripping down kryres

Back to less than

Test tubes density saturated solution

1the pairs received have

The liquids are in takanas with the characteristic tops of sodium chloride. The same property is

1syshsnny- mixtures of C10

Both solution-1 and chloride are glued together with tfiroa. typical for non-

1mathry. organic oxygen-containing

Lshi acids.

//\u003e 1C. :,; /,!. ... Usually and zops, silt alcohol is called NYULMNLOV

Alacha 5. Oki slinis formic acid oxide with

: silver1 mirror H - C + adO -\u003e stskx1de1nlnaya

I jubilate if the group is highlighted, then it can join

Ammonia solution to dissolve 0 // - HO - C 2AdX OH reactions characteristic of al-

Stealing the emerging dash. For example, she will give pc-

Hulk. Then akshpossrsbryano

Jubilee then 1rkala.\u003e Then

K-how many Opel mu- NSO, - CO: T N; 0 distinguishes it from lp\u003e rih carboio-

ХШЫ1Н0Й acidic acids, to which

Utah. Heated the test tube. There is no aldehyde group in the mixture.

Lacanse go-

RYACHA WATER.

Chrimite. 1a in fact, a silver mirror is oxidized

Zdviyoi kitty: it doesn't work. It is advisable that 1 experience is not

SHT OR B1CHT1, lrmy oxidation. for example, gloves an. and ka shya

Practical work in chemistry 10 cl. "Obtaining ethylene and experiments with it"

View document content “Chemistry Grade 10 Practical work №2. "Obtaining ethylene and experiments with it" "

View document content
“Chemistry Grade 10 Practical work №2. "Obtaining ethylene and experiments with it" "