Atoms, Molecules, and Chemical Reactions

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of protons, neutrons, and electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. It can be made up of the same or different types of atoms.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that involves the rearrangement of the molecular or ionic structure of a substance, resulting in the formation of new substances.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that in a closed system, the total mass of reactants equals the total mass of products in a chemical reaction.

Front

What are reactants?

Back

Reactants are the starting substances in a chemical reaction that undergo change to form products.

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What are products?

Back

Products are the substances that are formed as a result of a chemical reaction.

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What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom.

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What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.

Front

What is a neutron?

Back

A neutron is a neutral subatomic particle found in the nucleus of an atom, with no charge.

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a molecule, formed by the sharing or transfer of electrons.