Chemical reactions

• Oxidation:

  copper + oxygen → copper oxide
• Redox:

  reduction of oxygen
• Combustion

  fuel + oxygen
• Water turns anhydrous cobalt chloride blue to ?

  pink
• pH

  acids&alkalis
• red Litmus paper

  acid
• Metal oxides


  alkali
• Non-metal oxides


  acidic
• Test for hydrogen


  Lit splint = squeaky pop
• Test for oxygen


  Glowing splint relights
• Test for carbon dioxide

  Bubble through limewater = turns cloudy
• Starch test


  Iodine turns blue/black when starch is present
• Sugar test


  Benedicts solution changes from blue to brick red when heated with glucose
• whatGoes milky with ethanol

  fat
•  test for water anhydrous copper sulphate 

  goes blue from white 
• iron + sulphur + heat

  iron sulphide
• potassium sulphate

  K2SO4
• sodium nitrate

  NaNO3
• Calcium carbonate
• Calcium Carbonate

  CaCO3
• when water changes from liquid to solid

  it expands
• non-renewable energy

  wind
• renewable energy

  Wind
• Iron + Oxygen + WaterHydrayted iron oxide(rust)
• iron+oxygen+water

  Hydrayted iron oxide(rust)
• iron+oxygen+water

  hydrated iron oxide
• pH scale 7

  water/neutral
• acid+base

  salt+water
• copper oxide+sulphric acid

  copper sulfate+water
• metal+acid

  salt+hydrogen
• units of energy

  joules