Front

What are the substances listed on the right side of a chemical equation called?

Back

Products

Front

In the equation 2 Na + _ Cl2 -> 2 NaCl, what number should go in the blank?

Back

1

Front

How many hydrogen atoms are in 2 H2?

Back

4

Front

What does CaCO3 represent in chemistry?

Back

Formula

Front

What are the substances listed on the left side of a chemical equation called?

Back

Reactants

Front

What is the purpose of balancing a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved in the reaction.

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of an element in a molecule.

Front

What is the law of conservation of mass?

Back

Matter cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.