chemical tests

• tests for metal ions

  lithium red flame

  sodium yellow flame

  potassium lilac flame

  calcium brick red flame

  barium apple green flame

  copper green flame
• tests for halide ions

  add silver nitrate

  chloride white precipate

  bromide cream

  iodine yellow
• test for gases

  oxygen- glowing splint- relights

  hydrogen - burning splint - popping sound

  carbon dioxide - lime water- turns cloudy

  Nh- ammonia - damp red litmus paper