Chemical Reactions Critical Juncture 7

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which substances (reactants) undergo a transformation to form new substances (products) with different properties.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

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

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is an atom?

Back

An atom is the basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.