Conservation of Mass

Front

What do we call the chemicals that result from a chemical reaction?

Back

Products

Front

The Law of Conservation of Mass says that matter can neither be __________ or __________.

Back

created; destroyed

Front

Substances present at the start of a chemical reaction are called?

Back

Reactants

Front

Which of the following is a sign that a chemical reaction has occurred?

Back

Formation of a gas

Front

Is this equation balanced or unbalanced? H2 + O2 --> H2O

Back

Unbalanced

Front

What is the Law of Conservation of Mass?

Back

The principle stating that matter cannot be created or destroyed in a chemical reaction.

Front

What are reactants?

Back

The starting substances in a chemical reaction.

Front

What are products?

Back

The substances formed as a result of a chemical reaction.

Front

What is a sign of a chemical reaction?

Back

Change in color, temperature, formation of a gas, or precipitate.

Front

What does it mean for a chemical equation to be balanced?

Back

The number of atoms of each element is the same on both sides of the equation.