Chemical Reactions & Stoichiometry

Combination Reaction

Reaction in which two or more substances combine to form a new substance

Decomposition Reaction

Reaction in which a compound breaks down into two or more simpler substances

Combustion Reaction

Reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat

Single Replacement Reaction

Reaction in which one element replaces a similar element in a compound

Activity Series

List of elements in decreasing order of their reactivity; Single replacement reactions only occur when the element that is doing the replacing is more reactive than the element being replaced 

Double Replacement Reaction

A reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds

Stoichiometry

The calculation of the amount of substances in a chemical reaction from the balanced equation

Mole Ratio

conversion factor that relates the amounts of moles in any 2 substances in a chemical reaction

A +B —→ AB

Combination Reaction equation

AB —→ A +B

Decomposition reaction equation

N + O2 —→ NO2 (HAS TO BE IN REACTANT SIDE)

Combustion reaction equation

A   +   BC   →   AC   +   B

Single Replacement Reactions equation

AB  +  CD  →  AD  +  CB

Double replacement reactions equation