Chemical Reactions

Front

What is the law of conservation of mass?

Back

Matter cannot be created nor destroyed; it can only be transformed or changed.

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of each element in a compound.

Front

Back

22

Front

What occurs when a metal rusts?

Back

A different chemical substance is formed.

Front

What does a coefficient in a chemical equation represent?

Back

The number of molecules in a compound and is used to balance a chemical reaction.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition of a substance, while a chemical change does.

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.