1. Testing for Common Gases
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2. The 4 common Gases
Hydrogen
Oxygen
Carbon dioxide
Water

3. Hydrogen
To test to see if hydrogen gas (H2) was produced during a chemical reaction, bring a flaming splint close to the top of a slanted test tube containing the gas. Hydrogen gas will ignite and burn rapidly down the test tube, producing a “whoop” or “pop” sound.

4. oxygen
The test for oxygen gas (O2) involves bringing a glowing splint (one that is no longer flaming) into the slanted test tub. If oxygen gas is present, the splint will re-ignite.

5. Carbon dioxide
Carbon dioxide (CO2) can be tested for by adding limewater to a suspect solution. The transparent limewater will turn cloudy white if CO2 is present.

6. Water
Water vapour (H2O) can be tested for with a piece of cobalt chloride paper. The blue paper will turn pink in the presence of water.

7. Add zinc to Hydrochloric acid Burning splint test Pop!!
Lab 4-B
Gas
How youmake it.
How you test for it.
What happens.
Hydrogen H2
Add zinc to Hydrochloric acid
Burning splint test
Pop!!
Oxygen O2
Add manganese dioxide to hydrogen peroxide
Glowing splint test
Flames
Carbon dioxide CO2
Add marble to Acid
Limewater test
Turns cloudy
Water H2O
Breath
Cobalt Chloride test
Turns pink

8. Gas How youmake it. How you test for it. What happens. Hydrogen H2
Lab 4-B
Gas
How youmake it.
How you test for it.
What happens.
Hydrogen H2
Oxygen O2
Carbon dioxide CO2
Water H2O