Balancing Chemical Equations - Practice

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

Balance this equation: _CF4 + _Br2 -- _CBr4 + _F2

Back

1,2,1,2

Front

Complete the reaction: Mg + ___ HCl → MgCl2 + H2

Back

2

Front

What is the total number of atoms present in 5Na3PO4?

Back

40

Front

Balance this equation: _CH4 + _O2 --> _CO2 + _H2O

Back

1,2,1,2

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

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

Define a balanced chemical equation.

Back

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

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance.