Chemical analysis

Copper (II) ions form what colour precipitate test?

• Blue

• Green

• Red/Brown

• Cream

What colour precipitate does barium sulphate form?

• White

• Green

• Yellow

• Cream

Which of the following will you observe, when asked to decide if a chemical reaction has happened?

• gas is evolved

• precipitate is formed

• change in color

• all of the above

Aluminium and sodium hydroxide produces which colour precipitate?

• Yellow

• Green

• White

• Blue

Magensium and sodium hydroxide produces which colour precipitate?

• White

• Purple

• Blue

• Green

Calcium and sodium hydroxide produces which colour precipitate?

• Orange

• Clear

• Grey

• White

Which of the following precipitates dissolves in excess sodium hydroxide solution?

• Aluminium hydroxide

• Calcium hydroxide

• Magnesium hydroxide

Iron (II) ions form what colour precipitate test?

• Blue

• Green

• Red/Brown

• Cream

Iron (III) ions form what colour precipitate test?

• Blue

• Green

• Brown

• Cream

Which gas turns limewater cloudy?

• Oxygen

• Hydrogen

• Carbon dioxide

• Chlorine