Testing for Gases How do you know which gas is which? You test them! 3.0 / 5 based on 1 rating ? ScienceAll LevelsAll boards Created by: Valentina VettoreCreated on: 22-04-12 15:21 How to test for... Oxygen Light a splint Put the splint out Put it over the gas If it is oxygen the splint will relight. 1 of 12 How to test for... Oxygen Light a splint Put the splint out Put it over the gas If it is oxygen the splint will relight. 2 of 12 How to test for... Hydrogen Get a lit splint. Put it over the gas. If the gas is hydrogen a squeaky pop noise would have been made. 3 of 12 How to test for... Hydrogen Get a lit splint. Put it over the gas. If the gas is hydrogen a squeaky pop noise would have been made. 4 of 12 How to test for... Carbon Dioxide Get a lit splint. Put it over the gas. If the gas was Carbon Dioxide the splint would have been put out. 5 of 12 How to test for... Carbon Dioxide Get a lit splint. Put it over the gas. If the gas was Carbon Dioxide the splint would have been put out. 6 of 12 How to test for... Carbon Dioxide (Test 2) Get a glass of lime-water Get a straw and put it in the glass. Exhale through the straw. You will have to blow for a long time because exhaled breathe suprisingly only contains 3-4% CO2 If there is Carbon Dioxide (Which there will be) the lime water will turn a milky colour. 7 of 12 How to test for... Carbon Dioxide (Test 2) Get a glass of lime-water Get a straw and put it in the glass. Exhale through the straw. You will have to blow for a long time because exhaled breathe suprisingly only contains 3-4% CO2 If there is Carbon Dioxide (Which there will be) the lime water will turn a milky colour. 8 of 12 How to test for Carbon Dioxide (Test 3) Collect some Carbon Dioxide in a test tube. Carefully pour a little bit of limewater into the test tube. The limewater will turn a milky colour 9 of 12 How to test for Carbon Dioxide (Test 3) Collect some Carbon Dioxide in a test tube. Carefully pour a little bit of limewater into the test tube. The limewater will turn a milky colour 10 of 12 How to test for... Carbon Dioxide (Test 4) Put a few spoonfuls of clear limewater in a beaker and leave to sit for a few days. If there is CO2 present in the air, the lime water will turn into a milky colour. On the edges you will see some limestone forming because of the CO2 reacting with it. 11 of 12 How to test for... Carbon Dioxide (Test 4) Put a few spoonfuls of clear limewater in a beaker and leave to sit for a few days. If there is CO2 present in the air, the lime water will turn into a milky colour. On the edges you will see some limestone forming because of the CO2 reacting with it. 12 of 12
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