types of reactions

precipitation or double replacement

When aqueous solutions of positive ions and negative ions combine to form an insoluble, solid compound

acid base/neutralization reaction

When an acid(releases hydrogen ion in solution) reacts with a base (release of hydroxide in solution) to produce an ionic compound (salt) and water

oxidation/reduction (redox) reaction

Reaction where the oxidation numbers of the involve atoms change.

combustion reaction

Reaction between a hydrocarbon or any organic compound and oxygen to produce water and oxygen

ex: CH4 + O2 —> H2O + CO2

synthesis/composition

2 reactants combine to form one product

A + B —> AB

Cu + O2 —> CuO (not balanced)

decomposition

Compound breaks down into 2 products

AB —> A + B

KClO3 —> KCl + O2 (not balanced)

single replacement/single displacement

A type of redox reaction where an element of a compound is replaced by another element. Displacement is based on the reactivity series.

A + BC —> AX + B

HI + Cl2 —> HCl + I2 (unbalanced)

CuSo4(aq) + Al —> Al2(SO4)3 (Unbalanced)

Double displacement

Atoms or ions from 2 different compounds replace each other. 2 reactants and 2 products

AX + BY —> AY + BX

CaCO3 + HCl —> CaCl2 + H2CO3 (unbalanced)