Balancing Chemical Equations

Front

What is the left part of a chemical equation called?

Back

Reactants

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms? H3PO4, H2SO4, HClO3, H2O

Back

H2SO4

Front

Is the following reaction balanced? 2CH3OH + 3O2 --> 2CO2 + 4H2O

Back

Yes

Front

Which of the following equations are correctly balanced? 12CO2 + H2O --> C6H12O6 + O2, CO2 + 9H2O --> C6H12O6 + O2, CO2 + H2O --> 3C6H12O6 + O2, 6CO2 + 6H2O --> C6H12O6 + 6O2

Back

6CO2 + 6H2O --> C6H12O6 + 6O2

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

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 does it mean for a chemical equation to be balanced?

Back

The number of atoms of each element is equal 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 the number of molecules.