experiments

Cards (6)

  • solubility?
    • measure maximum mass of salt able to be dissolved in water at a temp
    • steps:
    • 100cm3 of water in beaker
    • record temp
    • add 5g of salt and stir - look to see any undissolved salt
    • if all has dissolved then keep adding 5g until there is excess at bottom of beaker - note how much salt has been used - this will be a saturated solution
  • chromatography?
    • base line drawn in pencil, 1cm from bottom of paper
    • put a spot of each sample of dye on different points along the baseline
    • suspend bottom of paper in solvent - will move up page
    • dye moves up page with solvent
    • leave to dry
  • test for ammonia gas?
    turns damp red litmus paper blue
  • test for carbon dioxide gas?
    put in limewater and see if it turns cloudy
  • test for chlorine gas?
    turns moist litmus paper white
  • test for hydrogen gas?
    squeaky pop with a lit splint