Revision IV - Nature of matter: Elements, compounds and mixtures. Chemistry CBSE Live product, Class 8 (2025-26): lessons, tests, tasks.

1.	Mixture: Pure and impure substance
2.	Elements and compounds

1.	Mixture and the components of air Difficulty: easy	4
2.	Nature and classification of minerals Difficulty: easy	2
3.	Symbols of metals and non-metals Difficulty: easy	2
4.	Compound and mixture Difficulty: medium	2
5.	Compounds and its constituent elements Difficulty: medium	3
6.	Iron sulphide compound and iron, sulphur mixyure Difficulty: medium	3
7.	Types of mixtures Difficulty: medium	3
8.	Compound and its characteristics Difficulty: hard	5
9.	Comparison of minerals Difficulty: hard	5

Methodical recommendation

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Revision IV - Nature of matter: Elements, compounds and mixtures