what is chemistry definition for kids

What is chemical reaction definition for kids?

KidzSearch Safe Wikipedia for Kids. A chemical change ( chemical reaction) is a change of materials into other materials with different properties . Chemical changes occur when a substance combines with another to form a new substance, or, chemical decomposition into two or more different substances. These processes are called chemical reactions .

What is chemical reaction for kids?

chemical reaction

• Introduction. A chemical reaction is a process in which one or more substances are converted to one or more different substances.
• Physical Versus Chemical Changes. Encyclopædia Britannica, Inc. ...
• Chemical Equations. Encyclopædia Britannica, Inc. ...
• Evidence of Chemical Reactions. ...
• Types of Chemical Reactions. ...
• Energy Changes in Chemical Reactions. ...

What is molecule definition for kids?

Introduction A molecule is the smallest unit of a substance that has all the properties of that substance. For instance, a water molecule is the smallest unit that is still water. A water molecule can be divided into tiny parts called atoms. This produces two hydrogen atoms and one oxygen atom.

What does being a chemist mean?

Chemists are the people who figure out how to mix different elements to make something useful to humanity. In Science News, it is said, “better living through chemistry never quite captured the whole story about society’s debt to the science of molecules” (Siegfried).

What is chemistry to kids?

Chemistry is the study of the make-up of all things and how they behave. It's based on the study of matter, which is what makes up everything in the universe and on Earth.

What is chemistry in simple terms?

Chemistry is the study of matter, analysing its structure, properties and behaviour to see what happens when they change in chemical reactions. As such, it can be considered a branch of physical science, alongside astronomy, physics and earth sciences including geology.

Why Is chemistry important for kids?

That is why teaching our kids chemistry is so important. Learning chemistry is a great way for kids to learn scientific methods and deductive reasoning skills, something that is often under-emphasized in schools today. Encouraging an early interest in science will help foster potential careers in STEM fields.

What is chemistry example?

Question 5: What are some examples of chemistry in daily life? Answer: Toothpaste, lotions, facewash, the food we eat, pharmaceuticals, batteries in watches, mobile phones, cars, laptops, and other electronic devices, and fuel in our vehicles are all instances of chemistry in our daily lives.

What is chemistry as a science?

Chemistry is a branch of natural science that deals principally with the properties of substances, the changes they undergo, and the natural laws that describe these changes.

How do you explain chemistry to students?

Chemistry is a great subject for students as it teaches them many concepts like the elements, their properties, compounds, etc....6 Tips On How to teach chemistry effectively?Explain the subject in a simple way. ... Give a clear explanation of the key topics. ... Avoid lengthy lectures and try to explain the concepts.More items...

How do you introduce chemistry to a child?

Chemistry For Kids Doesn't Have To Be BoringSupplement Your Child's Learning At Home.Watch A Variety Of Science Programmes.Look At Different Chemistry Sets For Kids.Try Fun Chemistry Experiments At Home.Expand Kids' Knowledge With Chemistry Books.Spark Their Curiosity For Chemistry.

What is matter Kid definition?

Matter is anything that has weight and takes up space. Everything you can see and touch is made up of matter. Matter exists in three main forms: solids, liquids, and gases. It also has properties that we can describe through density, solubility, conductivity, magnetism, etc.

What's another word for chemistry?

Chemistry Synonyms - WordHippo Thesaurus....What is another word for chemistry?natural sciencebiologypure sciencescience of matter1 more row

What is chemistry and why do we study it?

Chemistry is the study of the building blocks of our world. Everything you touch, wear, eat or drink is the result of a chemical process. By studying chemistry, you learn how the world works and how items, such as medicines, get manufactured.

What is chemistry and its importance?

Chemistry is often referred to as the central science because it joins together physics and mathematics, biology and medicine, and the earth and environmental sciences. Knowledge of the nature of chemicals and chemical processes therefore provides insights into a variety of physical and biological phenomena.

Why is chemistry so important?

The study of chemistry provides global work opportunities. Chemistry underpins understanding and progress in almost every sphere of science, technology and industry. It also makes a vital contribution to the economy, commerce and industry.

What is a chemist?

Introduction. Chemistry is one of the major branches of science. People who work in che mistry are called chemists. Chemists study the substances that make up matter —everything that takes up space in the universe. They also study the changes that take place when substances are combined. These changes are called chemical reactions. Interactive.

What are the elements that chemists study?

Elements and Compounds. The basic substances that chemists study are called chemical elements. Each element is made up of tiny particles, or bits, called atoms. Chemical reactions involve atoms or groups of atoms. When two or more atoms combine, they form a molecule. Each element has certain properties.

What did chemists learn about atoms?

Later chemists continued to make discoveries about atoms. For example, they learned that atoms are made up of even simpler particles.

How many elements are there in a compound?

When elements are combined, they form a new substance with its own properties. A substance formed in this way is called a compound. There are a little more than 100 elements. But there are millions of compounds.

When was chemistry first studied?

History. People first studied chemistry as a science in the 1600s. In 1661 a British scientist named Robert Boyle described chemical elements as simple, basic substances. In the 1770s a French chemist named Antoine Lavoisier helped to explain chemical reactions.

What are the changes that occur when substances are combined?

They also study the changes that take place when substances are combined. These changes are called chemical reactions. In addition, chemists create new substances. They have made plastics, fibers, building materials, medicines, and many other substances that are useful in everyday life.

What is chemistry for kids?

Chemistry for Kids. What is chemistry? Chemistry is the branch of science that studies the properties of matter and how matter interacts with energy. Chemistry is considered a physical science and is closely related to physics. Sometimes chemistry is called the "central science" because it is an important part of other major sciences such as ...

Why do we use chemistry?

Doctors use chemistry to make medicine that helps us when we are sick. Engineers use chemistry to make electronics like your TV and your cell phone. Farmers use chemistry to help their crops to grow so we can have food. Even chefs use chemistry to cook delicious meals.

What is matter made of?

When you study chemistry you will learn all about matter and its properties. Matter is composed of different building blocks. Atom - Matter is made up of tiny building blocks called atoms.

What is mixture in science?

Mixture - A material made up of different types of compounds that do not chemically combine.

Why is chemistry called the central science?

Sometimes chemistry is called the "central science" because it is an important part of other major sciences such as biology, Earth science, and physics. Scientists who specialize in chemistry are called chemists. Chemistry Subjects. Matter. Atom.

What are the building blocks of matter?

Matter is composed of different building blocks. Atom - Matter is made up of tiny building blocks called atoms. It takes millions and millions of atoms to make even the smallest object. Element - Substances made up of a single type of atom are called elements.

What is the science of chemistry?

The science of chemistry is the study of matter and the chemical changes that matter undergoes. Research in chemistry not only answers basic questions about nature but also affects people’s lives. Chemistry has been used, for example, to make stronger metals, to enrich soil for growing crops, to destroy harmful bacteria, and to measure levels of pollution in the environment. It has also made possible the development of such new substances as plastics, fibers, and new medicines.

How does chemistry work?

The work of chemistry is generally described as analysis and synthesis. Chemists analyze substances by taking them apart to find out what they are made of. Chemists synthesize substances by putting them together in different, possibly more useful combinations. Assisted by specialized instruments and computers, chemists study materials as small as single atoms and as large and complex as DNA (deoxyribonucleic acid), which contains millions of atoms. ( See also chemical analysis .)

What does a chemist want to know?

The chemist wants to understand how the universe is put together and how the substances in it can be changed to the advantage of humans. Chemists and physicists have made great advances in these efforts. They have discovered that all things in the universe can be classified as matter or energy and that matter and energy can be converted from one to the other.

Why is chemistry important?

Knowledge of chemistry is important in such fields as biology, medicine, agriculture, archaeology, and geology. Chemists themselves are employed by educational and research institutions, government, and industry.

How are compounds formed?

Compounds are formed by a process called a chemical reaction. Elements combine, or react, to form compounds that have physical and chemical properties different from those of the original elements. For example, when atoms of hydrogen gas and oxygen gas are combined at room temperature, they undergo a chemical reaction and form water. Water is a compound that is liquid at room temperature and is unlike either hydrogen or oxygen. Methane gas, made from carbon and hydrogen, and table sugar, made from carbon, hydrogen, and oxygen, are other examples of compounds.

How many elements are there in the universe?

More than 90 elements are known to exist in nature, and scientists have made about 20 additional elements artificially. The science of chemistry involves a study of these elements and of the compounds that are formed when different elements combine.

What is the role of chemical industry?

The function of the chemical industry is to create new chemicals and to supply the products of chemical research to the world. Using chemical reactions, the industry converts raw materials such as water, salt, metals and minerals, petroleum, coal, natural gas, plant cellulose and starch, and atmospheric gases into other products. Some of these products are used by manufacturers. They include the chemicals needed to make metal and paper products; wallboard, pipe, insulation, and other construction materials; polymers for plastic toys, bottles, films, paints, and other items; and fibers for carpets and fabrics. Other chemical products that are used by consumers more directly include medicines, dyes, paints, fertilizers, shampoos, detergents and waxes, perfumes, cosmetics, and flavorings.

What is the definition of chemistry?

Medical Definition of chemistry. 1 : a science that deals with the composition, structure, and properties of substances and of the transformations that they undergo. 2 a : the composition and chemical properties of a substance the chemistry of hemoglobin.

What does "chemistry" mean in biology?

2 a : the composition and chemical properties of a substance the chemistry of iron. b : chemical processes and phenomena (as of an organism) blood chemistry. 3 a : a strong mutual attraction, attachment, or sympathy they have a special chemistry.

What is chemistry in science?

English Language Learners Definition of chemistry. : a science that deals with the structure and properties of substances and with the changes that they go through. : the structure and properties of a substance : the way a substance changes and reacts with other substances. : a strong attraction between people.

What is the definition of chemical composition?

1 : a science that deals with the composition and properties of substances and of the changes they undergo. 2 : chemical composition and properties the chemistry of food.

How to understand chemical reactions?

The first thing we need to understand before learning about the basics of chemical reactions is their definition. The easiest do it is to look at what is going on “inside” the reaction. Imagine that we have two different substances with their own number of atoms and the amount of mass, unique for each one. We decide to make them interact with each other and, as a result, we get at least one new substance. While the mass is conserved (it does not change), the atoms are getting rearranged; that is why the new substance gets new properties, different from the ones of an original substance.

How to distinguish between chemical reactions?

Another way to distinguish between the chemical reactions is to classify them in terms of how the reaction proceeds. One of the easiest types is synthesis. It is a process in which two simple reactants are combined, and as a result, we get a new, more complicated product. It can be shown with a formula A + B → AB or a chemical equation of, for example:

Where do chemical reactions take place?

Nonetheless, we can meet chemical reactions not only in the laboratory or in the students book in a written form, but also all around the world and even in our everyday life. For instance, your body carries out lots of chemical reactions simply while processing your food. As a result, the food is broken down into glucose and some other molecules that, furthermore, our cells absorb.

How do chemical reactions differ?

Chemical reactions differ not only by the type of reactants but also by the time it takes to get the final product. The “speed” of chemical reactions is called reaction rate. It can vary from rather slow (for example, metal rusting) to very fast (like an explosion). We can control and change the rate of some reactions by adding more heat, light, or electricity and increasing the reactants’ concentration. Moreover, some special substances (different for various reactions) enable us to speed up or slow down the reaction. The one that is called catalyst is responsible for increasing the rate of reaction, while an inhibitor can slow it down. They are normally not consumed by the reaction.

What is the reverse process of chemical reactions?

The reverse process is decomposition. It is a process where chemical compounds are broken down into simpler separate substances. This type of chemical reaction usually demands the input of energy. A formula for decomposition is AB → A+ B, and the example is a reaction with the solid potassium chlorate, which produces oxygen gas and the solid potassium chloride when interacting with heat:

What is the evidence that a chemical change has occurred?

You have probably seen it while baking: cake batter rises when acid in the batter reacts with baking soda (sodium bicarbonate). What can also be evidence that a chemical change has occurred is a precipitate. This solid product is constructed as a result of a mix of certain liquids.

What is the difference between chemical and physical changes?

The main difference is that physical changes work with the states of matter — melting, evaporation, solidification, condensation, etc.

What Is Chemistry?

Are you fascinated with science, and do you love to conduct experiments? You might like to become a chemist one day! A chemist is a scientist who studies the area of science known as chemistry. What exactly is chemistry? Chemistry focuses on chemical substances and how they interact with each other. A chemical substance is a form of matter. Matter is anything that takes up space. So your shirt is matter, your television is matter, and even your dog is matter!

Why is chemistry important?

These scientists now are doing amazing research on how to fight diseases like cancer. They are also working to find solutions for how to make our water and air cleaner. Who knows, maybe one day you will be a chemist in a lab working to find a cure for a deadly disease!

Why is math important for chemists?

Are math and science your favorite subjects? If so, you might be well on your way to becoming a chemist! While reading and writing are very important in learning about chemistry, this area of science focuses especially on math. Chemists have to measure chemical substances with accuracy to make sure their research is correct, and because even a small mistake could mean a big error in their work, or worse, create a dangerous situation.

What is it called when you study and conduct research and experiments using chemical substances?

Scientists called chemists study and conduct research and experiments using chemical substances, which are pure forms of matter. In order to become a chemist, students must go to a college or university. Chemists often work in laboratories, and there are special types of chemists who study medicine, water, the environment, and biochemistry.

Where do chemists work?

Where do chemists work? They can actually work most anywhere, but often their research and experiments are conducted in a space called a laboratory. This is a designated area that has materials they need for their research. It is the responsibility of the chemist to make sure that dangerous substances in the laboratory are stored properly, and that procedures are followed to keep people safe. While chemistry can be a lot of fun, it can get dangerous if rules are not carefully followed.

What are some examples of pure matter?

These are chemical substances, and that is what a chemist studies. An example of a chemical substance that you might be familiar with is table salt.

What is physical chemistry?

The word physical in the term physical chemistry refers to physics, the fundamental physical science ( see physics ). Physical chemistry uses physics to study chemical problems and to provide a deeper understanding of chemistry ( see chemistry ). Other names for physical chemistry are chemical physics and theoretical chemistry.

When did chemistry start?

Modern physical chemistry began in the early 20th century with the introduction of quantum theory. Quantum mechanics provided a more accurate model of the structure and energy states of atoms and molecules, of the effects of radiation, and of the nature of electromagnetic spectra. Early in the century, the pioneer physicist Albert Einstein applied quantum mechanics and statistical mechanics to solids and postulated the basic law of photochemistry ( see Einstein ). In 1912 the German physicist Max von Laue discovered that X rays could be diffracted by crystals. His work marked the origin of X-ray and neutron crystallography. In the 1930s the American chemist Linus Pauling applied quantum mechanics to the study of molecular structures, particularly in connection with chemical bonding ( see Pauling ).

What is the role of chemical thermodynamics in manufacturing?

This was a major achievement of chemical thermodynamics and it plays a large role in the process of chemical manufacturing. Chemical thermodynamics provides an exact theoretical framework for predicting the likelihood that certain chemical reactions will occur, but it cannot predict their speed.

What is the role of the study of the structure and physical properties of gases?

The study of the structure and physical properties of gases has played a central role in physical chemistry: it has provided one of the simplest physical models of a substance. Chemists divide gases into two classes: ideal gases, which are purely theoretical, and real gases. A real gas behaves like an ideal gas ...

How does photochemistry work?

Photochemistry deals with the effects of radiant energy on all kinds of chemical reactions and with the mechanisms responsible for those effects. Reactions that ordinarily occur only at high temperatures can be carried out at room temperature by exposing the reaction mixture to ultraviolet radiation, for example. The rate of the reaction can be controlled simply by varying the intensity of the radiation. The most common sources of radiation are high-pressure mercury lamps. X rays and gamma rays are also used. Infrared radiation and microwaves do not produce photochemical effects.

What is chemical thermodynamics?

Chemical Thermodynamics. Encyclopædia Britannica, Inc. The study of the energy changes that accompany chemical reactions is the subject of chemical thermodynamics. Researchers in this field use thermodynamics, a branch of physics, to interpret these energy changes.

When was physical chemistry first published?

Physical chemistry as a separate science began in 1881, when the first issue of Zeitschrift fur Physikalisches Chemie was published, a magazine devoted exclusively to physical chemistry.

What is the meaning of alchemy?

Originally, alchemy was an ancient tradition of sacred chemistry used to discern the spiritual and temporal nature of reality, its structure, laws, and functions. alcohol - a substance that contains an -OH group attached to a hydrocarbon.

What is yield in chemistry?

yield - In chemistry, yield refers to the quantity of a product obtained from a chemical reaction. Chemists refer to experimental yield, actual yield , theoretical yield, and percent yield to differentiate between calculated yield values and those actually obtained from a reaction.

What is the chemical species that accepts electrons or donates protons or hydrogen ions?

acid - a chemical species that accepts electrons or donate protons or hydrogen ions. acid anhydride - a nonmetal oxide that reacts with water to form an acidic solution. acid-base indicator - a weak acid or weak base that changes color when the concentration of hydrogen or hydroxide ions changes in an aqueous solution.

How does the periodic table organize elements?

The periodic table organizes elements according to trends in their properties. Digital Art / Getty Images

What is alkalinity in science?

Alkalinity is a measure of how basic a substance is. JazzIRT / Getty Images

Why is water called the universal solvent?

Water is called the universal solvent because so many compounds dissolve in it. Yuji Sakai / Getty Images

What is the inductive effect of a chemical bond?

inductive effect - effect a chemical bond has on the orientation of adjacent bonds in a molecule. inhibitor - substance that slows or prevents a chemical reaction. inorganic chemistry - study of chemistry of molecules of non-biological origin (not containing C-H bonds). insoluble - unable to dissolve in a solvent.

What is solution in science?

Introduction. A solution is a mixture of two or more substances that stays evenly mixed. Substances that are combined to form a solution do not change into new substances. Some examples of solutions include seawater, gasoline, glass, steel, and air.

What is the name of the substance that dissolves into another substance?

A solution forms when a substance dissolves, or breaks apart, into another substance. The substance that dissolves to form a solution is called a solute. The substance in which a solute will dissolve is called a solvent. In a sugar-water solution, sugar is the solute and water is the solvent. The water dissolves the sugar.

How does a solute change the physical properties of a solution?

However, the individual particles of the different substances in the solution affect one another. The solute will break up into molecules or atoms that arrange themselves uniformly throughout the solvent. This changes the physical properties of the solvent.

How does sugar dissolve in water?

When a spoonful of sugar is stirred into a glass of clean water, it will dissolve and form a solution. The tiny particles called molecules that make up sugar spread apart evenly throughout the water. The sugar and water molecules do not change. Like all mixtures, solutions can be separated. However, it is not always easy to separate them ...

What is the boiling point of water?

For example, the boiling point of pure water is 212 °F (100 °C). However, salt water has a higher boiling point than pure water. The more salt that is added to water, the more the boiling point will increase. Print (Subscriber Feature)

Is sugar a solvent or a solute?

In a sugar-water solution, sugar is the solute and water is the solvent. The water dissolves the sugar. Another example of a substance that dissolves in water is table salt. It is a solute that dissolves in water to form a saltwater solution.