Chemical Tests Review

A lit splint burns with a squeaky pop, is the test for which gas?

• Ammonia

• Carbon dioxide

• Chlorine

• Hydrogen

• Oxygen

A glowing splint relights, is the test for which gas?

• Ammonia

• Carbon dioxide

• Chlorine

• Hydrogen

• Oxygen

Turning limewater cloudy, is the test for which gas?

• Ammonia

• Carbon dioxide

• Chlorine

• Hydrogen

• Oxygen

The test for ammonia gas is ...

• turns limewater blue

• turns damp red litmus paper blue

• turns damp blue litmus paper red

• turns damp red litmus paper blue then bleaches it white

• turns damp blue litmus paper red then bleaches it white

The test for chlorine gas is ...

• turns limewater blue

• turns damp red litmus paper blue

• turns damp blue litmus paper red

• turns damp red litmus paper blue then bleaches it white

• turns damp blue litmus paper red then bleaches it white

In a flame test what colour do lithium ions (Li⁺) form?

• red

• yellow

• lilac

• orange-red

• blue-green

In a flame test what colour do calcium ions (Ca²⁺) form?

• red

• yellow

• lilac

• orange-red

• blue-green

In a flame test, which ion is responsible for a lilac colour?

• Lithium, Li⁺

• Sodium, Na⁺

• Potassium, K⁺

• Calcium, Ca²⁺

• Copper, Cu²⁺

In a flame test, which ion is responsible for a yellow colour?

• Lithium, Li⁺

• Sodium, Na⁺

• Potassium, K⁺

• Calcium, Ca²⁺

• Copper, Cu²⁺

In a flame test, which ion is responsible for a blue-green colour?

• Lithium, Li⁺

• Sodium, Na⁺

• Potassium, K⁺

• Calcium, Ca²⁺

• Copper, Cu²⁺