NaOH + Pb(NO3) 2 Pb(OH) 2 + NaNO3

ORDER:1. Balance metals2. Balance non-metals3. Balance oxygen 2nd last4. Balance hydrogen last

Tip for balancing equations:

6 Basic Types of Reactions

1. Combination (Synthesis)2. Decomposition3. Single replacement4. Double replacement5. Neutralisation 6. Combustion

Combination Reactions

• reactants join together to form a single product

Magnesium burns in Oxygen

Decomposition Reactions

Products split to form 2 or more reactants

Electrolysis of water

Decomposition of Hydrogen Peroxide

Single Replacement Reaction

A single compound replaces one element for another(ie. Metals swap positions)

AB + C AC + B

Hydrochloric Acid with Mg metal

Double Replacement ReactionWhen two ionic compounds swap ions with each other (eg. Cation with cation)

AB + CD AD + CB

Potassium iodide and lead nitrate

Neutralisation Reaction

• A special type of double replacement reaction involving an acid and base to form an ionic salt and water

• Eg. HBr + LiOH

Combustion Reaction

Gasoline vs Diesel

Balance the reaction:

hexane + oxygen carbon dioxide + water

C6H14 (l) + O2 (g) CO2 (g) + H20 (g)