2.1.10

Identifying Gases 2

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Identification of Common Gases

Here is a summary of the tests for common gases:

Hydrogen

Hydrogen

Hold a lit splint at the open end of a test tube containing a gas.
If the gas is hydrogen, a “squeaky pop” sound will be produced.

Oxygen

Oxygen

Insert a glowing splint into a test tube containing a gas.
If the gas is oxygen, the splint will relight.

Carbon dioxide

Carbon dioxide

Bubble through, or shake carbon dioxide with, an aqueous solution of calcium hydroxide (also called lime water).
The solution will turn from clear to cloudy.

Chlorine

Chlorine

Insert damp litmus paper into a test tube containing a gas.
If the gas is chlorine, the litmus paper will bleach and turn white.

1

Biology

1.1

Practicals

1.1.1Microscope & Bacteria 1.1.2Bacteria 1.1.3Osmosis Tests 1.1.4Osmosis & Food Tests 1.1.5Enzymes 1.1.6Enzymes 2 1.1.7Photosynthesis & Plant Responses 1.1.8Photosynthesis Experiments 1.1.9Reaction Time 1.1.10Quadrats 1.1.11Decay

2

Chemistry

2.1

Practicals

2.1.1Salts 2.1.2Neutralisation 2.1.3Titration 2.1.4Electrolysis 2.1.5Electrolysis 2 2.1.6Rate of Reaction 2.1.7Rate of Reaction 2 2.1.8Chromatography 2.1.9Identifying Gases 2.1.10Identifying Gases 2 2.1.11Identifying Ions 2.1.12Carbonates, Halides & Sulfates 2.1.13Flame Emission Spectroscopy 2.1.14Water Purification 2.1.15Water Purification 2

3

Physics

3.1

Practicals

3.1.1Specific Heat Capacity 3.1.2Thermal Capacity & Insulation 3.1.3Latent Heat 3.1.4Resistance & Current 3.1.5Resistance & Current 2 3.1.6Density 3.1.7Density 2 3.1.8Force & Extension - Springs 3.1.9Waves - Ripple Tank 3.1.10Light 3.1.11Light Reflection & Refraction 3.1.12Radiation 3.1.13Radiation 2

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1

Biology

1.1

Practicals

1.1.1Microscope & Bacteria 1.1.2Bacteria 1.1.3Osmosis Tests 1.1.4Osmosis & Food Tests 1.1.5Enzymes 1.1.6Enzymes 2 1.1.7Photosynthesis & Plant Responses 1.1.8Photosynthesis Experiments 1.1.9Reaction Time 1.1.10Quadrats 1.1.11Decay

2

Chemistry

2.1

Practicals

2.1.1Salts 2.1.2Neutralisation 2.1.3Titration 2.1.4Electrolysis 2.1.5Electrolysis 2 2.1.6Rate of Reaction 2.1.7Rate of Reaction 2 2.1.8Chromatography 2.1.9Identifying Gases 2.1.10Identifying Gases 2 2.1.11Identifying Ions 2.1.12Carbonates, Halides & Sulfates 2.1.13Flame Emission Spectroscopy 2.1.14Water Purification 2.1.15Water Purification 2

3

Physics

3.1

Practicals

3.1.1Specific Heat Capacity 3.1.2Thermal Capacity & Insulation 3.1.3Latent Heat 3.1.4Resistance & Current 3.1.5Resistance & Current 2 3.1.6Density 3.1.7Density 2 3.1.8Force & Extension - Springs 3.1.9Waves - Ripple Tank 3.1.10Light 3.1.11Light Reflection & Refraction 3.1.12Radiation 3.1.13Radiation 2

Practice questions on Identifying Gases 2

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1
How does calcium hydroxide look after carbon dioxide bubbles through it?Multiple choice
2
What is another name for an aqueous solution of calcium hydroxide?Multiple choice
3
What is involved in a positive test for carbon dioxide? True / false
4
The apparatus required when testing for carbon dioxideFill in the list
5
Which gas does this experiment test for?Multiple choice

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Identifying Gases

Identifying Ions