“Chemical properties of water” - Pure water is a transparent liquid that has no color, taste or smell. Theoretical (analysis of articles, publications.). Therefore, water boils at approximately 180? C higher than it should boil. Fundamental question. Moisture rises from the roots to the tops of tall trees. Ice is lighter than water (?=0.92 g/cm?).
“Substance water” - Water... Work in groups Water! What kind of water do we use? Subject CHEMISTRY Performers “Theorists” - students of group 29 - PKD. Water affects the cooking and taste of food. Subject BIOLOGY, FUNDAMENTALS OF ECOLOGY Performers “Ecologists” - students of group 28 - PKD. Has taste; has no taste. Water? Has a smell; has no smell.
“Water and its properties” - In reality, single molecules of water do not exist at normal temperature and pressure. There are several hypotheses describing the structure and properties of water associates. Experience 1. Expansion. But water with salt in 2 hours only acquired a light coating on the surface. The ability to release heat to the environment through evaporation.
“Mineral waters” - Various layers of soil serve as a kind of filter. Otherwise, you can get the opposite effect of the healing effect. HOW TO BE TREATED CORRECTLY? The second is for medical dining rooms, which should not be overdone. It would seem that it could be simpler - minerals and gases dissolved in water. The effects of mineral waters are very diverse and affect all organs and systems.
“Physical properties of water” - Based on its chemical composition, water can be called an oxygen hydride. But water behaves differently here too. Well, who doesn’t know that water freezes at 00C? H2Te, H2Se and H2S are chemical analogues of water. What is water? Dependence of boiling and freezing temperatures on molecular weight. At what temperature does water boil?
“Properties of water” - For example, we can take coals. Water is one of the most common substances in nature. Let's deal with oxides first. 1. Reactions of water with basic oxides. Chemical properties of water. March 22 is World Water Day according to the UN calendar, Water Day. No. 4 Experimental chemists Does solubility depend on temperature?
There are a total of 13 presentations in the topic
Water does not wet everything. Liquid molecules are attracted to each other more strongly than to solid molecules. As a result of the attractive force between the molecules of the liquid, it is collected into a droplet. This is how mercury behaves on glass, water on paraffin or a greasy surface
Surface tension The thermodynamic characteristic of the interface between two phases in equilibrium, determined by the work of the reversible isotherm of the kinetic formation of a unit area of this interface, provided that the temperature, volume of the system and the chemical potentials of all components in both phases remain constant.
Why is water a universal solvent? Water is electrically neutral. But the electric charge inside the molecule is distributed unevenly: in the region of hydrogen atoms, positive charge predominates, in the region where oxygen is located, the density of negative charge is higher. Therefore, a water particle is a dipole. This property of the water molecule explains its ability to orient itself in an electric field and attach to other molecules that carry a charge. If the energy of attraction of water molecules to molecules of a substance is greater than the energy of attraction between water molecules, then the substance dissolves.
19 states of water Scientists identify at least 5 different states of water in liquid form and 14 states in frozen form. No matter what you do, at -38°C even the purest, ultra-chilled water will suddenly turn to ice. What will happen as the temperature drops further? At -120 °C, something strange begins to happen to water: it becomes super viscous or viscous, like molasses, and at temperatures below -135 °C it turns into “vitreous” or “vitreous” water - a solid substance that lacks crystalline structure.
Water surprises physicists In 1995, a neutron scattering experiment conducted by scientists yielded an unexpected result: physicists discovered that neutrons aimed at water molecules “see” 25% fewer hydrogen protons than expected. It turned out that at a speed of one second (seconds) an unusual quantum effect takes place, and the chemical formula of water instead of H 2 O becomes H 1.5 O!
Conclusion Water cannot wet fatty surfaces Water is electrically neutral Hot water freezes faster than cold Water Scientists identify 19 states of water: 5 in liquid form and 14 in frozen form At the speed of one otto second (seconds), the chemical formula of water instead of H 2 O becomes H 1.5 O
References D.E., Technology and production. M., 1972 Khomchenko G.P., Chemistry for those entering universities. M., 1995. Prokofiev M.A., Encyclopedic Dictionary of a Young Chemist. M., 1982. Glinka N.L., General chemistry. Leningrad, 1984 Akhmetov N.S., Inorganic chemistry. Moscow, 1992
Nikitin Ivan
Research work for participation in a scientific and practical conference.
Download:
Preview:
To use presentation previews, create a Google account and log in to it: https://accounts.google.com
Slide captions:
The amazing properties of water were performed by: Nikitin Ivan MBOU Gymnasium No. 4 3 “A” class
Purpose of the work: Find out what properties water has and how people use them.
Work plan Study information about water, find interesting facts in books and the Internet. Conduct experiments to study the properties of water. Find out where a person uses the considered properties of water.
Quotes about water “Water, you have no taste, no color, no smell, you cannot be described, they enjoy you without knowing what you are. You are not just necessary for life, you are life.” Antoine de Saint-Exupéry “Although there is no object in the world that is weaker and more delicate than water, it can destroy the hardest object.” Lao Tzu “Water is the beauty of all nature. Water is alive, it runs or is agitated by the wind, it moves and gives life and movement to everything around it.” S.A. Aksakov
Interesting facts about water A person needs about 2 liters of water per day Without water, a person can live only six days An adult’s body consists of 70% water, a child’s body is 80% During his life, a person drinks approximately 35 tons of water And 33 liters of water can be boiled with energy human body excreted per day Polluted groundwater takes several millennia to clear
Marvelous! The largest raindrop measured 9.4 centimeters! Such drops fell on the United States. The longest continuous rain fell in India for almost two years! The largest hailstone weighed one kilogram and two grams! It fell in Bangladesh. The thickness of the cloud in the sky can be larger than Mount Everest, its thickness can reach sixteen kilometers! An iceberg can take as long as ten years to melt.
DEW RESERVOIR CLOUDS SNOW FOG STEAM FROST AS WE KNOW WATER
Properties of water
In order to learn more about the properties of water, I conducted a series of experiments. Will a needle sink? (surface tension) Match star Live flowers Does salt water freeze? Water expands when it freezes
Will the needle sink? (surface tension) A piece of napkin with a needle was placed on the surface of the water. Using another needle, the napkin was lowered to the bottom of the cup. The needle remained on the surface of the water. Water molecules try to be as close as possible and attract each other, “pulling” the surface of the water. Surface tension holds the needle on the water
A star made of matches (capillary phenomenon) Take 5 matches, break them in half and bend them at an angle. Fold them with their corners towards the center. This is how the figure turns out. Drop a few drops of water into the center. After some time, the matches straighten, forming a star. The reason for the phenomenon called capillarity is that that wood fibers absorb moisture. It creeps further and further through the capillaries. The tree swells, and its surviving fibers “get fat” and can no longer bend much and begin to straighten out.
Fresh flowers Cut out flowers from colored paper Twist the petals to the center and drop them into a bowl of water After a while, the petals will begin to straighten The petals have completely straightened Paper consists of fibers. They resemble very thin tubes. When the paper gets wet, the tubes fill with water and the paper swells. When folded, the paper also swells and the petals straighten. (Capillary phenomenon)
Does salt water freeze? They took two identical cups of water. They put a large amount of salt in the cup under the letter “B” and put it in the freezer overnight. After standing in the freezer all night, the salt water in cup “B” did not freeze, but ice crystals formed in the cup. The fresh water in cup A has turned to ice.
Water expands when it freezes. We poured ordinary tap water into a glass... ... and put it in the freezer overnight. The next day we took out a glass of frozen water. It can be seen that the ice has risen in a tubercle. In water, molecules move randomly, so it takes the shape of the vessel into which it is poured. Ice has a clear crystalline structure, and the distances between ice molecules are greater than between water molecules, so ice takes up more space than water, that is, it expands.
What properties of water are used in everyday life? All the properties of water that I have considered are used in everyday life.
What properties of water are used in industry Capillarity Has no shape Solvent Evaporates Fluidity Colorless Odorless Tasteless
What properties of water are used in agriculture and animal husbandry Fluidity Evaporation Capillarity Solvent Surface tension Colorless Tasteless Odorless No definite shape Transparent
What properties of water are used in shipping and power plants Fluidity Evaporation Surface tension Colorless, tasteless and odorless
Rest Colorless, tasteless and odorless Fluidity Surface tension
Water is the greatest wealth of man. The earth is 70% covered with water and in nature the natural cycle of water is constantly maintained: it evaporates from the surface of reservoirs and then falls in the form of precipitation: rain or snow. But still, some areas of the globe constantly suffer from a lack of fresh water. That is why it is worth remembering that water is the greatest wealth given to us by nature, and every drop of it is precious, because human life is impossible without water.
While doing my job, I learned a lot of interesting things about water. But there are still many questions left: What is living and dead water? Which water is called hard and which soft? Water can give life, but it can also destroy. How is water treated?
Preface This work is a continuation of the project “Living and Dead Water”, and has its continuation in the form of a practical part (studying the “memory” of water by influencing water with our emotional state, music and our words) This work is a continuation of the project “Living and Dead Water ”, and has its continuation in the form of a practical part (studying the “memory” of water by influencing water with our emotional state, music and our words)
Fundamental question: does water have memory Problem questions: 1. Basic structures of water crystals 1. Basic structures of water crystals 2. “Water and music” 2. “Water and music” 3. “Water and human health” 3. “Water and health” person" 4. "Spoken water." 4. “Spoken water.” 5. “Methods of purifying water from information.” 5. “Methods of purifying water from information.”
We use water every day. We are so accustomed to it that we don’t even think about the huge role it plays in our lives. Suffice it to say that the body is 70% water. Water is involved in all processes that ensure the vital functions of the human body. Water is included in all food products. We use water every day. We are so accustomed to it that we don’t even think about the huge role it plays in our lives. Suffice it to say that the body is 70% water. Water is involved in all processes that ensure the vital functions of the human body. Water is included in all food products. If a person can live without food for several months, then without water - no more than a week. If a person can live without food for several months, then without water - no more than a week.
Structure of a water molecule The water molecule has an angular structure; the nuclei included in its composition form an isosceles triangle, at the base of which there are two protons, and at the apex the nucleus of an oxygen atom. The internuclear distances OH are close to 0.1 nm, the distance between the nuclei of hydrogen atoms is approximately 0.15 nm.
Basic properties of water: According to its chemical structure, water is supposed to melt and boil at low temperatures, but this did not happen only because water violated the law and boils at a temperature of +100 ° C, and melts at 0 ° C. According to its chemical structure, water is supposed to melt and boil at low temperatures, but this did not happen only because water violated the law and boils at a temperature of +100 ° C, and melts at 0 ° C. Due to the exceptional ability of water to absorb heat, its temperature changes only slightly when heated and cooled, so marine life is never threatened by either severe overheating or excessive cooling, and the ocean is the greatest heat accumulator. Due to the exceptional ability of water to absorb heat, its temperature changes only slightly when heated and cooled, so marine life is never threatened by either severe overheating or excessive cooling, and the ocean is the greatest heat accumulator. To evaporate water, five and a half times more heat is required than to boil it. If water did not have this property - to evaporate slowly even in hot weather - many lakes and rivers would quickly dry up, and all life in them would perish. To evaporate water, five and a half times more heat would be required than to boil it . If water did not have this property - to slowly evaporate even in the heat - many lakes and rivers would quickly dry up, and all life in them would perish. It turns out that when water freezes, it also gives off a lot of heat. One liter of water, turning into ice, can warm up 250 thousand liters of air by 1 °C - this is the volume of air. It turns out that when water freezes, it also gives off a lot of heat. One liter of water, turning into ice, can warm up 250 thousand liters of air by 1 °C - this is the volume of air.
Basic properties of water: When freezing, water expands by 9% relative to its previous volume. Therefore, ice is always lighter than unfrozen water and floats up. In addition, ice, like water, is a good heat insulator, so a rare body of water freezes to the bottom, and marine animals are not very cold. When water freezes, it expands by 9% relative to its previous volume. Therefore, ice is always lighter than unfrozen water and floats up. In addition, ice, like water, is a good heat insulator, so a rare body of water freezes to the bottom, and marine animals are not very cold. Water contracts when cooled, but at +4 ° C a limit is reached, here it begins to expand again, although the temperature continues to decrease. Water contracts when cooled, but at +4 ° C a limit is reached, here it begins to expand again, although the temperature continues to decrease. Of all liquids except mercury, water has the highest surface tension. Of all liquids except mercury, water has the highest surface tension. Water is the best solvent in the world! Water is the best solvent in the world! Pure distilled water is almost non-conductive. Pure distilled water is almost non-conductive. The electrical conductivity of aqueous solutions, for example salts, is high. The electrical conductivity of aqueous solutions, for example salts, is high.
The basis of the structure of water crystals - the well-known snowflakes - is a hexagon, and it is from its formation that crystallization begins. And around this hexagon, ornaments decorating it can appear. The appearance of these decorations, as well as the color of the crystal, is determined by the information previously perceived by the water. The basis of the structure of water crystals - the well-known snowflakes - is a hexagon, and it is from its formation that crystallization begins. And around this hexagon, ornaments decorating it can appear. The appearance of these decorations, as well as the color of the crystal, is determined by the information previously perceived by the water
Japanese researcher Masaru Emoto has been studying... water for more than twenty years. Or rather, its crystals, which he obtains in his laboratory, are photographed and then analyzed under a microscope with a magnification of several hundred times. These many years of research allowed the scientist to make an amazing, truly sensational discovery. Japanese researcher Masaru Emoto has been studying... water for more than twenty years. Or rather, its crystals, which he obtains in his laboratory, are photographed and then analyzed under a microscope with a magnification of several hundred times. These many years of research allowed the scientist to make an amazing, truly sensational discovery.
While studying ordinary distilled water, Masaru Emoto discovered that the shape of the crystals formed from it can be very diverse, and their appearance depends on the nature of the information impact exerted on the water before its crystallization began. While studying ordinary distilled water, Masaru Emoto discovered that the shape of the crystals formed from it can be very diverse, and their appearance depends on the nature of the information impact exerted on the water before its crystallization began. Basic structures of water crystals
Bach, "Air for the G string" Hard rock Crystals and music
These photographs of crystals showed incredible reflections of water as alive and very receptive to our every emotion and thought. It is absolutely clear that water easily absorbs the effects of vibrations and energies, both toxic and polluted, and pristine clean environments. These photographs of crystals showed incredible reflections of water as alive and very receptive to our every emotion and thought. It is absolutely clear that water easily absorbs the effects of vibrations and energies, both toxic and polluted, and pristine clean environments. Masaru Emoto's extraordinary work is a great showcase and a powerful tool that can forever change the way we perceive ourselves and the world we live in. We now have important evidence that we can heal and transform ourselves and our planet with the power of thought. Masaru Emoto's extraordinary work is a great showcase and a powerful tool that can forever change the way we perceive ourselves and the world we live in. We now have important evidence that we can heal and transform ourselves and our planet with the power of thought.
Our research: Unable to observe water crystals, we tried to simply freeze water from our well in a plastic bottle for 4 days at a temperature of about -8 degrees. Then they opened the bottle and found that the water in the middle was not frozen in a volume of 120 ml. This can be explained by the fact that during gradual crystallization from the sides, all foreign impurities are displaced from the ice crystal lattice and collected in the center, increasing the concentration of impurities in the water, which leads to a decrease in the freezing point of water towards lower temperatures. In the center there is a cavity with unfrozen water Unfrozen water
Our research After making sure that the water from our well was of low quality, I decided to study the impact of water quality on public health. Having contacted the local hospital, I received the following data on the incidence of polyarthritis in the population. Of the 8 surveyed areas, in 3 settlements (the villages of Yadrino, Izambaevo, Poshnary), artesian wells do not work; the remaining settlements use water from artesian wells. The results were interesting (quite expected). The results were interesting (quite expected).
The incidence of polyarthritis in the population (in %) in the territory of the Yadrinsky rural settlement. (polyarthritis is directly related to the quality of consumed water - salt deposition) number of sick population % p. Yadrino15074.7 Izambaevo40082 Poshnary30062 Yanymovo70050.7 Chebakovo80030.37 Mochary24020.8 Alekseevka15000 N. Yadrino7000 The first 3 settlements consume water from wells, the rest from artesian wells.
Conclusions: 1. The incidence of polyarthritis directly depends on the quality of the water consumed 2. The quality of water from wells is an order of magnitude worse than from artesian wells 3. The lowest quality water is in the village. Yadrino Diagram of the incidence of polyarthritis in the population of the Yadrino rural settlement
The wonderful properties of water do not end there. It is capable of transmitting information, “remembering” words and thoughts, and turning on the healing mechanism in the human body. Water cleanses not only from physical, material dirt, but also from energetic dirt. The most accessible way to cleanse any object from energetic dirt is to clean it with water. To do this, you should keep it in water for three days, changing the water every day. The result will not be long in coming. You can also keep the item in running water for about an hour to clean it. To remove negative energy programs, you yourself need to take a contrast shower: cool - hot - cool - hot - cool. Required in this order. You can take a bath. To do this, you need to sit (lying) in the bathtub and clearly imagine that all the energetic dirt is descending from you into the water. To enhance the cleansing effect, you can dissolve sea salt in the bath - it collects negative energy. The wonderful properties of water do not end there. It is capable of transmitting information, “remembering” words and thoughts, and turning on the healing mechanism in the human body. Water cleanses not only from physical, material dirt, but also from energetic dirt. The most accessible way to cleanse any object from energetic dirt is to clean it with water. To do this, you should keep it in water for three days, changing the water every day. The result will not be long in coming. You can also keep the item in running water for about an hour to clean it. To remove negative energy programs, you yourself need to take a contrast shower: cool - hot - cool - hot - cool. Required in this order. You can take a bath. To do this, you need to sit (lying) in the bathtub and clearly imagine that all the energetic dirt is descending from you into the water. To enhance the cleansing effect, you can dissolve sea salt in the bath - it collects negative energy. Our tips:
Water also has powerful protective potential. If you have troubles, a bad mood, or poor health (associated not with a physical illness, but with depression), take a shower or bath. A morning shower charges you with energy for the whole day. Its effects will be enhanced by infusions of herbs (oak bark, chamomile, lavender, fragrant infusions). When you bathe in water (river), you should not spit in it. Water will punish you with diseases in response to this. She hears and understands human speech. You cannot send curses to the river even during a period of disaster - the punishment will only intensify. The water is very energetically strong on Agrafena-bathing bath (July 6), on Ivan Kupala (July 7), on Epiphany (January 19) and on Maundy (Great) Thursday (the Thursday before Easter). Water also has powerful protective potential. If you have troubles, a bad mood, or poor health (associated not with a physical illness, but with depression), take a shower or bath. A morning shower charges you with energy for the whole day. Its effects will be enhanced by infusions of herbs (oak bark, chamomile, lavender, fragrant infusions). When you bathe in water (river), you should not spit in it. Water will punish you with diseases in response to this. She hears and understands human speech. You cannot send curses to the river even during a period of disaster - the punishment will only intensify. The water is very energetically strong on Agrafena-bathing bath (July 6), on Ivan Kupala (July 7), on Epiphany (January 19) and on Maundy (Great) Thursday (the Thursday before Easter). Our tips:
If you had a bad dream, then hold your hands under running water (an open tap is fine) and remember your dream. The water will carry him away. When circumstances are unsuccessful, step over flowing water (stream, river - over a bridge, ditch). If your relationship with your loved one has gone wrong, go to a pond together. Soon you will definitely make peace, and the bad things after such visits will definitely go away. If you sincerely love a person, but are afraid or embarrassed to admit it, make a confession. You need to speak on the water so that your breath causes the water to vibrate. Give water to the object of love to drink. Drinking water will definitely convey your feelings to a person. Since water tends to carry away not only bad things, but also good things, it is not recommended to sing in the bathroom. When you sing, you are not just in a good mood, but in a state of happiness (usually). Water will take away absolutely any of your sensations and states, including the feeling of happiness. In ancient times, cheerful, soulful songs were never sung over the river. They chanted to the river. They listed their pain, which the water carried away. It has always been this way. It'll be this way forever. If you had a bad dream, then hold your hands under running water (an open tap is fine) and remember your dream. The water will carry him away. When circumstances are unsuccessful, step over flowing water (stream, river - over a bridge, ditch). If your relationship with your loved one has gone wrong, go to a pond together. Soon you will definitely make peace, and the bad things after such visits will definitely go away. If you sincerely love a person, but are afraid or embarrassed to admit it, make a confession. You need to speak on the water so that your breath causes the water to vibrate. Give water to the object of love to drink. Drinking water will definitely convey your feelings to a person. Since water tends to carry away not only bad things, but also good things, it is not recommended to sing in the bathroom. When you sing, you are not just in a good mood, but in a state of happiness (usually). Water will take away absolutely any of your sensations and states, including the feeling of happiness. In ancient times, cheerful, soulful songs were never sung over the river. They chanted to the river. They listed their pain, which the water carried away. It has always been this way. It'll be this way forever. Our tips:
To “zero” water, it must be boiled or frozen (you can also evaporate and condense). This is how water loses all the information it has consumed. This is confirmed by photographs of the structure of water (they said to the water in one glass: I hate you! And to the other water: I love you! Then both samples were frozen... the structure was naturally different. Then the same water was thawed and the structure was examined, it was found that the structure of the water has changed and lost the negative and positive that was put into it... To “zero” the water, it needs to be boiled or frozen (you can also evaporate and condense). This way the water loses all the information that it consumed. Confirms these are photographs of the structure of water (they said to the water in one glass: I hate you! And to the other water: I love you! Then both samples were frozen... the structure was naturally different. Then the same water was thawed and the structure was examined, it was found that the structure water has changed and lost the negative and positive that was put into it... Our advice:
Why water? ?
- Water is an amazing chemical compound, studied not only by chemists, but also by physicists. The chemical composition of waters can be the same, but their effect on the body can be different. Because each water was formed in specific circumstances. Water is not only the most common, but also the most important liquid in the environment; water is the life of all living things.
Structure of a water molecule
The simplest model of a water molecule accepted today is the tetrahedron. Tetrahedron (model): a – view of a water molecule from the side of hydrogen atoms; b – view of a water molecule from the side of an oxygen atom; c – charges (electrons located in a water molecule in the form of a tetrahedron) In reality, single water molecules do not exist at normal temperature and pressure. There are several hypotheses describing the structure and properties of water associates. However, a common understanding has not yet been achieved.
Anomalous thermal properties of water
- At +4 C Water at this temperature is heavier than at any other temperature, and therefore will always sink to the bottom of the reservoir. As a result of these processes, mixing of water layers will always occur in the reservoir. And this is very important for life, since the water at the bottom of any quiet pond or lake is always poor in oxygen, and if there were no mixing of the water, the inhabitants of the reservoir would begin to suffocate from its lack.
Abnormally high heat capacity
- When heated by one degree, water absorbs 5 to 30 times more heat than any other substance. Therefore, those processes that occur in our body during intense muscular work do not cause such a high rise in temperature as would be the case with other liquids.
The ability to release heat to the environment through evaporation.
- As is known, water, evaporating from the surface of the body of humans, animals and plants, protects them from overheating.
Another extremely important property of water is its extremely high surface tension. .
- Molecules on the surface of water experience intermolecular attraction on one side. Since the forces of intermolecular interaction in water are abnormally strong, each molecule floating on the surface of the water is, as it were, drawn into the water layer.
Extension
For this experience I needed
Empty bottle
Paint (for clarity)
Abnormal behavior of water when freezing
- One of these unique properties of water is its ability to expand when frozen. After all, when all substances freeze, that is, during the transition from a liquid to a solid state, they compress, but water, on the contrary, expands. Its volume increases by 9%
Why does water expand?
- This is due to the molecular structure of ice: when freezing, the molecules are located at a considerable distance from each other, forming a loose ice structure, thereby increasing the volume, but maintaining mass, thus, water in the solid state (ice) is lighter than in the liquid state.
What does freezing do?
- When frozen, it ensures ice floats, that is, it preserves life under the ice. Getting into small cracks that are always found in stones, rainwater expands when freezing and destroys the stone. Thus, gradually the stone surface becomes capable of sheltering plants, which, with their roots, complete this process of destruction of stones and lead to the formation of soil on the mountain slopes.
