Chemical Tests

• What colour is produced in the flame test for Sodium?

  Yellow
• What colour is produced in the flame test for Lithium?

  Crimson
• What colour is produced in the flame test for Copper?

  Green
• What colour is produced in the flame test for Potassium?

  Lilac
• What colour is produced in the flame test for Calcium?

  Brick-Red
• What substance is used to test for Halide Ions?

  Acidified Silver Nitrate
• What colour precipitate is produced when acidified silver nitrate is added to Chloride Ions?

  White
• What colour precipitate is produce when acidified silver nitrate is added to Bromide Ions?

  Cream
• What colour precipitate is produce when acidified silver nitrate is added to Iodide Ions?

  Yellow
• What substance is used to test for Metal Ions?

  Sodium Hydroxide
• What colour precipitate is produced when sodium hydroxide is added to Copper Ions?

  Blue
• What colour precipitate is produced when sodium hydroxide is added to Iron II Ions?

  Green
• What colour precipitate is produced when sodium hydroxide is added to Iron III Ions?

  Brown
• What elements form a white precipitate when sodium hydroxide is added?

  Aluminium, Calcium and Magnesium
• How do you tell if aluminium is in the tested substance?

  Aluminium Ions will re-dissolve in excess sodium hydroxide
• How do you tell if Calcium is in the tested substance?

  Produces a Brick-Red coloured flame
• How do you tell if Magnesium is in the tested substance?

  Ions don‘t re-dissolve and don’t produce a coloured flame
• What substance is used to test for Sulphate Ions?

  Acidified Barium Chloride
• What colour precipitate is produced when acidified barium chloride is added to a sulphate ion?

  White
• What substance is used to test for Carbonate Ions?

  Hydrochloric Acid
• What is formed when HCL is added to carbonate ions?

  Carbon Dioxide
• What is the test for Carbon Dioxide?

  Bubble gas through limewater, it turns cloudy
• What is the test for Chlorine Gas?

  Damp litmus paper bleaches
• What is the test for Oxygen?

  Glowing splint put into the gas, splint relights
• What is the test for Hydrogen?

  Put lit splint in gas, squeaky pop sound is made