Balancing Chemical Equations

Front

What is the Law of Conservation of Mass?

Back

It states that matter cannot be created or destroyed.

Front

What is the sum of all the coefficients when the equation H2 + O2 --> H2O is balanced?

Back

5

Front

Is H2O an element or a compound?

Back

Compound

Front

What type of reaction is CaCO3 --> CaO + CO2?

Back

Decomposition

Front

How many HCl molecules are needed to balance the equation Mg + __HCl --> MgCl2 + H2?

Back

2

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 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.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is a synthesis reaction?

Back

A type of reaction where two or more substances combine to form a single product.