Front

What is the Law of Conservation of Mass?

Back

It states that matter cannot be created or destroyed.

Front

Is the following reaction balanced? NaHCO₃ --> Na₂CO₃ + H₂O + CO₂

Back

No

Front

How many HCl molecules do you need to balance this equation? Mg + __HCl --> MgCl₂ + H₂

Back

2

Front

What is a coefficient in a chemical equation?

Back

The large number in front of a chemical formula.

Front

Is the following equation balanced? 4Fe + 3O₂ --> 2Fe₂O₃

Back

Yes

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 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 is the purpose of using coefficients in a chemical equation?

Back

To indicate the number of molecules or moles of a substance involved in the reaction.

Front

What is the difference between a chemical equation and a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides.