The role of chemistry in social life presentation. Chemistry presentation on the topic “The role of chemistry in human life” free download

The role of chemistry in human life .

Prepared by: chemistry teacher M.I. Savrasova

"Chemistry spreads wide M. V. Lomonosov.

Everywhere, wherever we turn our gaze, we are surrounded by objects and products made from substances and materials obtained in chemical plants and factories. Besides, in Everyday life Without knowing it, every person carries out chemical reactions. For example, washing with soap, washing with detergents, etc.

"Chemistry spreads wide hands into the affairs of men" M. V. Lomonosov.

When a piece of lemon is dropped into a glass of hot tea, the color weakens - the tea here acts as an acid indicator, similar to litmus. A similar acid-base interaction occurs when chopped blue cabbage is soaked in vinegar. Housewives know that cabbage turns pink. By lighting a match, mixing sand and cement with water, or extinguishing lime with water, or burning a brick, we carry out real and sometimes quite complex chemical reactions.

"Chemistry spreads wide hands into the affairs of men" M. V. Lomonosov.

Chemistry as a science and at the same time as an area of ​​application of knowledge is very impressive. Without the use of chemical technologies, material production is impossible. New materials are constantly entering our lives. Nowadays it is one of the most fundamental sciences about substances and their properties, without which life itself is impossible.

Chemistry has entered our lives so organically that the existence of a person outside of chemistry can no longer be imagined. It creates a huge amount of substances that provide humans with a modern level of existence.

Production metals

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Chemistry in everyday life Chemistry, having enormous potential, creates unprecedented materials, increases soil fertility, facilitates a person’s work, saves his time, clothes him, preserves his health, creates coziness and comfort for him, and changes the appearance of people. But the same chemistry can also become dangerous to human health, even deadly.

Home first aid kit Hydrogen peroxide is an excellent antiseptic. Ammonia water solution ammonia stimulates the respiratory center. Aspirin, or acetylsalicylic acid, is one of the drugs that is widely used as an antipyretic, anti-inflammatory, analgesic and antirheumatic agent. Medicines for the treatment of the cardiovascular system are validol, corvalol, nitro glycerin.

Detergents and detergents Currently, synthetic detergents are widely used. The main one is synthetic surfactants, in which a long hydrocarbon limiting radical connected to a sulfate or sulfonate group. In addition to surfactants, SMS also includes other components: bleach, softener, foaming agents, aromatic fragrances. The most common oxygen-containing bleaches are sodium perborate and sodium percarbonate.

Means for fighting household insects Insecticides are means for fighting insects. Insecticides are used in the form of solutions, emulsions, and aerosols. Residential premises should be treated only with preparations recommended for this purpose. This known drugs: chlorophos (), dichlorvos, chlorophos pencils.

Chemical hygiene products and cosmetics Cosmetics and hygiene are closely related, since there are cosmetics (lotion, creams, shampoos, gels) that perform a hygienic function. Important hygiene products include, first of all, soaps and detergents.

Dental care products The most important means dental care products are toothpastes. The main components of toothpaste are as follows: abrasives, binders, foaming agents and thickeners. The first of them provide mechanical cleaning of teeth from plaque and polishing. Most often, chemically precipitated calcium carbonate is used as an abrasive, as well as calcium phosphates and polymeric sodium metaphosphate.

Deodorants Deodorants are produced in solid form, roll-on and in aerosol packaging. Aerosol cans use liquefied gases whose boiling point is very low. They easily pass into the gas phase and not only push the base out of the container, but, expanding, spray it into small droplets. For a long time This role was performed only by chlorochlorocarbons.

Chemistry and food Man is the only creature on Earth that subjects almost all of its food to chemical or heat treatment. Let's try to figure out what happens to the main components of our food during the cooking process.

Fats Fats make up an essential part of our food. They are found in meat, fish, dairy products, and grains. Components of natural fat, important of which are phosphatides, sterols, vitamins, pigments and odor carriers. Phosphatides are actually the same esters, but their composition, unlike fats, includes residues of phosphoric acid and amino alcohol. Sterols are natural polycyclic compounds of very complex configuration. A representative is cholesterol. Vitamins. They are rich in the liver of fish and sea animals, vegetable fats, and butter. Pigments are substances that give color to fats. Odor carriers are very diverse and complex in structure; there are more than 20 of them in butter.

Carbohydrates Carbohydrates are the main energy providers for the human body. Glucose is a monosaccharide. Glucose is easily absorbed by the body, because in its molecule the carbon and hydrogen atoms are partially oxidized and combined with oxygen. Fructose is also a monosaccharide, an isomer of glucose. Sucrose is a disaccharide. IN ordinary life just sugar. Lactose is a disaccharide. Starch is a polysaccharide consisting of many units that are remnants of glucose molecules. Glycogen is similar in structure to starch, but differs from it in the greater branching of its molecules. Cellulose is a plant polysaccharide consisting of many units that are remnants of glucose molecules.

Proteins Proteins are natural high-molecular compounds, the structural basis of which is made up of polypeptide chains built from amino acid residues. Proteins are the basis of all life on Earth and perform diverse functions in organisms. Proteins entering the body with animal and plant foods are ultimately hydrolyzed to amino acids.

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Chemistry - (from the Greek Chemia - Chemistry) is the science that studies the transformation of substances. Everywhere, wherever we turn our gaze, we are surrounded by objects and products made from substances and materials obtained in chemical plants and factories.

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In conditions modern world It is impossible to imagine our life without household chemicals, be it washing powder, perfumes or other products. With the help of detergents, people keep their home clean and comfortable, cosmetics and perfumes help preserve beauty, and various shampoos and creams help protect against bacteria and are an ideal means of preventing diseases.

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Chemistry plays a major role in the development of the pharmaceutical industry: the bulk of all drugs are obtained synthetically. Thanks to chemistry, many revolutions in medicine have been accomplished. Without chemistry, we would not have painkillers, sleeping pills, antibiotics or vitamins.

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Exclusively great importance chemistry has in agriculture, which uses mineral fertilizers, plant protection products against pests, plant growth regulators, chemical additives and preservatives for animal feed and other products.

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Modern development it is difficult to imagine construction without the use of chemical industry products: the use and introduction of new structural polymer materials, plastics, synthetic fibers, rubbers, binders and finishing substances and many other useful products of large and small chemicals.

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The development of chemistry began long before the beginning of our era. Its most ancient direction is metallurgy. It was then that people began to study the transformations of various substances under various conditions and began to use chemistry for their needs. First, they learned how to obtain metals (primarily copper) and mix it with tin to obtain bronze. Later iron was also obtained from ore.

Presentation on the topic: “The role of Chemistry in the life of society” by a student of grade 9-A
Kovtun Andrey

The role of chemistry in the life of society is very great. It is used in all industries in nature, science and technology.

THE ROLE OF CHEMISTRY IN THE LIFE OF SOCIETY IS VERY GREAT. SHE
USED ​​IN ALL INDUSTRIAL INDUSTRIES IN NATURE,
SCIENCE AND TECHNOLOGY.

At all times, chemistry serves man in his practical activities.

AT ALL TIMES CHEMISTRY SERVES
TO MAN IN HIS PRACTICAL
ACTIVITIES.
The man himself does not
suspecting
everyday use
chemical reactions.
One can even cite
so simple
examples like washing
things, morning
washing, etc. And even
lighting a match
is a chemical reaction.

Chemistry also plays a big role in modern industry.

CHEMISTRY ALSO PLAYS A BIG ROLE IN
MODERN INDUSTRY.
Chemical and petrochemical
industry are
the most important industries, without
which are impossible
functioning of the economy.
Among the most important chemical products
acids, alkalis,
salts, mineral fertilizers,
solvents, oils, plastics,
rubbers and rubbers, synthetic
fibers and much more.

The development of many industries is associated with chemistry: metallurgy, mechanical engineering, transport, construction materials industry

THE DEVELOPMENT OF MANY INDUSTRIAL INDUSTRIES IS CONNECTED WITH CHEMISTRY:
METALLURGY, MECHANICAL ENGINEERING, TRANSPORT, INDUSTRY
BUILDING MATERIALS, ELECTRONICS, LIGHTWEIGHT, FOOD
INDUSTRY - HERE IS AN INCOMPLETE LIST OF INDUSTRIES OF THE ECONOMY,
WIDELY USING CHEMICAL PRODUCTS AND PROCESSES.

Chemistry in agriculture

CHEMISTRY IN AGRICULTURE
Exceptionally large
chemistry matters in
agriculture,
which uses
mineral fertilizers,
plant protection products
pest control, regulators
plant growth,
chemical additives and
preservatives for food
animals and others
products.

Chemistry and Medicine

CHEMISTRY AND MEDICINE
Plays a big role
chemistry in development
pharmaceutical
industry:
the bulk of all
medicinal
receive medications
synthetically.

Chemistry in the food industry

CHEMISTRY IN THE FOOD INDUSTRY
Currently
chemical substances
widely used in
food
industry.

“Chemistry Silicate Industry” - The influence of the silicate industry on nature. Lesson objectives: Silicate industry. IN Chelyabinsk region 43% of the cement produced in the Urals Federal District and 40% of slate are produced. The influence of the silicate industry on nature. Ceramics Glass Cement. Silicate industry. Products of the silicate industry. Ancient flint tools.

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“Glass production” - D.I. Mendeleev’s idea about the polymer structure of “silica glass” turned out to be the most valuable. The centuries-old history of glass, full of secrets and adventures, continued. Glass. We had never dreamed of a material that combines such diverse properties before. Venetian glass - frozen music...

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