Unit 8 Test Review - Chemical Reactions

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

How do you balance the equation HgO --> Hg + O?

Back

The balanced equation is 2HgO --> 2Hg + O2.

Front

What is a precipitate?

Back

A precipitate is a solid that forms when two liquids are mixed together.

Front

When does a chemical reaction stop?

Back

A chemical reaction stops when the limiting reactant is used up.

Front

What is an electrolyte?

Back

An electrolyte is a solute whose aqueous solution conducts electricity.

Front

What type of reaction is C5H10 + O2 --> CO2 + H2O?

Back

This is a complete combustion reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction.

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.