Balancing Chemical Equations

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

What is the right part of a chemical equation called?

Back

Products

Front

In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?

Back

Mg and O

Front

Balance this equation: _Al +_HCl --> _H2 +_AlCl3

Back

2,6,3,2

Front

Balance the following equation: ___ Mg+ ___ O2→___ MgO

Back

2, 1, 2

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are 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 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.

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element in a molecule.