Unit 3 Review

Front

What does the Law of Conservation of Mass state?

Back

The mass in chemical reactions cannot be created nor destroyed, just rearranged.

Front

What type of reaction is represented by the equation ZnCl2 + Mg --> Zn + MgCl2?

Back

Single Replacement

Front

What type of reaction always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water?

Back

Combustion

Front

Balance the equation: _Zn + _HCl --> _ZnCl2 + _H2

Back

1, 2, 1, 1

Front

What type of reaction involves one reactant breaking down into several products?

Back

Decomposition

Front

Define a chemical reaction.

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is a reactant in a chemical reaction?

Back

A substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

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

Front

What is the general form of a combustion reaction?

Back

Hydrocarbon + O2 -> CO2 + H2O.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.