Chem B Unit 1 Test

A new substance formed in a chemical reaction

• balanced equation

• chemical equation

• product

• reactant

A starting substance in a chemical reaction

• balanced equation

• chemical equation

• product

• reactant

A concise representation of a chemical reaction

• balanced equation

• chemical equation

• product

• reactant

An equation in which each side has the same number of atoms of each element

• balanced equation

• chemical equation

• product

• reactant

A reaction in which a single compound is broken down into simpler substances.

• decomposition

• synthesis

• single replacement

• double replacement

• combustion

A reaction in which Oxygen reacts with another substance, often producing heat or light.

• decomposition

• synthesis

• single replacement

• double replacement

• combustion

A reaction in which the atoms of one element replace the atoms of a second element in a compound.

• decomposition

• synthesis

• single replacement

• double replacement

• combustion

A reaction in which two compounds or elements join together to make one new compound.

• decomposition

• synthesis

• single replacement

• double replacement

• combustion

Chemical reactions

• occur only in living organisms

• create and destroy atoms

• only occur outside living organisms

• produce new substances

In the chemical equation H2O2 (aq) --> H2O (l) + O2(g), the O2 is a _____

• Catalyst

• solid

• product

• reactant