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Properties and uses of gases and global warming

1.	Introduction to air and its composition
2.	Oxygen: occurrence, physical properties and uses
3.	Oxygen: chemical properties
4.	Nitrogen: occurrence, physical properties and uses
5.	Nitrogen: chemical properties
6.	Nitrogen fixation
7.	Carbon dioxide: occurrence, physical properties and uses
8.	Carbon dixoide: chemical properties
9.	Global warming and green house effect
10.	Global warming: Causes, effects and prevention
11.	Acid rain: Consequences and prevention

1.	Acid rain: Match the following Difficulty: easy	3
2.	Mixture of air and greenhouse gases: Drag and drop Difficulty: easy	2
3.	Chemical properties: oxygen, nitrogen, carbon dioxide and acid rain Difficulty: easy	3
4.	Air and cause of global warming: Drag and drop Difficulty: medium	5
5.	Nitrogen: drag and drop Difficulty: medium	3
6.	Oxygen, nitrogen, carbon dioxide: physical properties Difficulty: medium	3
7.	Chemical properties of carbon dioxide: choose the right answer Difficulty: medium	4
8.	Chemical properties of nitrogen: choose the right answer Difficulty: medium	5
9.	Global warming and uses of gases Difficulty: medium	2
10.	Oxygen, nitrogen, carbon dioxide: properties and uses Difficulty: medium	3
11.	Chemical properties of oxygen Difficulty: hard	3
12.	Chemical properties: oxygen, nitrogen Difficulty: hard	3

1.

Training Test

Difficulty: medium

11

1.

Methodical recommendation

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