Combustion, Corrosion and Precipitation Reactions

• Review of types of reactions

• Combustion reactions

• ​Corrosion reactions

• ​Solutions and solubility

• ​Precipitation Reactions

• ​Predicting the precipitate

• ​a fuel reacts with oxygen and releases heat

• ​this fuel can be a number of things, we often see a hydrocarbon

• ​also known as 'burning'

• ​complete or incomplete

• ​general form = fuel + oxygen --> carbon dioxide + water

• ​just have to balance!

• ​Will always give us a metal oxide

• ​then just have to balance it

• ​also known as corrosion (sometimes!)

• ​a specific metal oxide reaction

• ​when a metal is exposed to oxygen and/or water

• ​changes the metal into a more stable form, with a protective 'layer' on top to prevent more exposure to the air

• ​solutions are where a solute is dissolved in a solvent

• ​soluble = are able to be dissolved

• ​insoluble = unable to be dissolved

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​Precipitation reactions are where two solutions are mixed together, and form an insoluble solid

​Often double displacement reaction

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• ​aqueous solution + aqueous solution --> aqueous solution + insoluble solid

• ​all you have to do is swap around the reactants to make the products, taking note of the charge

• ​AB + CD --> AD + CB

• ​Precipitate = the insoluble solid

• ​USE YOUR DATA SHEET!!!!!!