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

How many Sodium (Na) atoms are in 6 NaCl?

Back

6

Front

How many atoms of carbon (C) are in C6H12O6?

Back

6

Front

What type of reaction is represented by CH4 + O2 --> CO2 + H2O?

Back

Combustion

Front

How many Mn atoms are found in 3 Cr(MnO4)6?

Back

18

Front

What is a balanced chemical equation?

Back

A chemical equation where the number of atoms for each element is the same on both sides of the equation.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the Law of Conservation of Mass is obeyed.

Front

What is the coefficient in a chemical equation?

Back

A number placed in front of a compound to indicate how many molecules or moles of that compound are present.

Front

How do you determine the number of atoms in a compound?

Back

By multiplying the subscript of each element by the coefficient in front of the compound.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.