5 types of chemical reactions
During a synthesis reaction, several reactants combine to make a single product.
H2 + O2 --> H20
During decomposition, one reactant separates into two or more products
H20 --> H2 + O2
NaCl--> Na + Cl2
During single replacement reactions a single atom replaces an ion from another reactant.
Na + MgCl2 --> NaCl + Mg
Ag + KCl --> K + AgCl
During double replacement reaction the cations and the anions of the two reactants switch places, forming two new compounds or products.
MgCl2 + NaF--> NaCl + MgF2
Al2S3 + Na2O --> Al2O3 + Na2S
During combustion, a hydrocarbon reacts with oxygen and the products are always the same- water and carbon dioxide and energy.
C4H8 + O2--> CO2 + H20
C6H14 + O2--> CO2 + H2O
How to use the activity series
The activity series is a series of metals, in order of reactivity from highest to lowest. It is used to determine the products of single displacement reactions, whereby metal A will replace another metal B in a solution if A is higher in the series. The activity series of Halogens is used the same way. Fluorine is most Reactive and Iodine is least reactive.
Activity Series of Metals
Activity Series of Halogens
The rules are used to discover if the products of a reaction will be solid or liquid when dissolved in water.