Chemical Reactions-Review

Front

Why must chemical equations be balanced?

Back

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

Front

What type of reaction is characterized by the release of heat?

Back

Exothermic

Front

How do you balance the equation HNO2 + O2 --> HNO3?

Back

2 HNO2 + 1 O2 --> 2 HNO3

Front

What type of chemical reaction is Al(OH)3 --> Al2O3 + H2O?

Back

Decomposition

Front

What type of reaction is Zn + H2S --> ZnS + H2?

Back

Single replacement

Front

What is the Law of Conservation of Matter?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

Define an exothermic reaction.

Back

A reaction that releases heat to the surroundings.

Front

Define an endothermic reaction.

Back

A reaction that absorbs heat from the surroundings.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is a synthesis reaction?

Back

A reaction where two or more reactants combine to form a single product.