Chemistry Counts: Practical Investigations - Teacher's Handbook

Looking at everyday substances; how does a bunsen burner work?; separating pure salt from rock salt; does soil contain soluble substances?; how does nail varnish remover work?; separating fractions from crude oil; how can we get pure water and salt from sea water?; separating the dyes in inks; solving crime with chromatography; what happens when substances are heated?; do substances change weight on heating?; why do baking soda, bread and limestone lose weight on heating?; comparing metals and plastics; comparing metals and non-metals; panning for gold; froth flotation; what do we get from minerals?; extracting metals from their ores; what happens when we make a mixture?; what happens when we make a compound?; lemon slices; preparing oxygen; how does oxygen react with elements?; what type of oxide?; what makes a good fuel?; which firelighters are the best value?; which is the best value-meths or paraffin?; checking the position of metals in the reactivity series; how do metals react with cold water?; how does magnesium react with steam?; comparing - lithium with sodium and potassium - magnesium and calcium - the compounds of metals in group II; epsom salts; what causes rusting?; how can we prevent rusting?; the uses and properties of chlorine; comparing chlorine, bromine and iodine; what happens when photographs are taken?; comparing solids, liquids and gases; dissolving sugar; how does temperature affect solubility?; investigating diffusion and Brownian motion; how many particles are there in a crystal?; how large are the particles of olive oil?; what is the formula of magnesium oxide?; finding the formula of Epsom salts; what happens to baking soda during baking?; comparing the reactivity of metals; Alpha Alloys PLC; finding the heat of a reaction; limestone for Calchem PLC; which ions cause hard water?; comparing the hardness of different waters; softening hard water; what are pH numbers?; how do acids react?; how does water play a part in acidity?; designing a fire extinguisher; how do bases react?; looking at neutralization; how can we cure indigestion?; why are shampoos "pH balanced"?; making soluble salts; preparing zinc sulphate; looking at salts; making an insoluble salt; fertilizers; testing the pH of soils and fertilizers; what happens during electrolysis?; getting electricity from chemicals; what are rechargeable cells?; electroplating; purifying copper; comparing molecular and ionic compounds; salt - an important ionic compound; why do we put salt on icy roads?; what is the effect of heat on sulphur?; making rhombic sulphur crystals, monoclinic sulphur crystals; cracking liquid paraffin; testing for unsaturation; making alcohol; how can we dehydrate ethanol?; making nylon; investigating plastics; how does concentration affect reaction rate?; do surface area and temperature affect reaction rate?; looking for the best catalyst; investigating a reversible reaction; modelling radioactive decay.