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- 1. Multiple Choice
Which of the following is a chemical test for the gas oxygen?
relights a glowing splint
bleaches damp litmus paper white
pops with a lit splint
turns limewater cloudy
- 2. Multiple Choice
Which of the following is a chemical test for the gas hydrogen?
relights a glowing splint
turns limewater cloudy
bleaches damp litmus paper white
pops with a lit splint
- 3. Multiple Choice
A gas turns damp red litmus paper blue. The gas is
sulfur dioxide, SO2
oxygen, O2
ammonia, NH3
carbon dioxide, CO2
- 4. Multiple Choice
Which gas is formed when a metal reacts with an acid?
oxygen, O2
chlorine, Cl2
hydrogen, H2
carbon dioxide, CO2
- 5. Open Ended
What colour would be observed in the flame if the solid contained sodium ions?
- 6. Multiple Choice
Acidified barium nitrate solution is added to another solution of an unknown compound. A white precipitate forms. What anions are in the unknown compound?.
Chloride
sulfate
Carbonate
nitrate
- 7. Multiple Choice
What reagents would you use to show that a solution of (NH4)2Fe(SO4)2 contains ammonium ions?
NaOH and HCl
HCl and AgNO3
NaOH and litmus paper
HNO3 and litmus paper
- 8. Fill in the Blank
What two reagents are needed for a chemical test to show that a solution of a substance contains chloride ions.
- 9. Multiple Choice
What gas is formed when ammonium chloride is warmed with aqueous sodium hydroxide?
Ammonia
Chlorine
Oxygen
Hydrogen
- 10. Multiple Choice
Which gas changes damp litmus paper from red to blue?
Ammonia
Carbon dioxide
Chlorine
Hydrogen
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