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Theory

Exercises

1. Endothermic process

Difficulty: easy

2
2. Sublimation and crystallistion

Difficulty: easy

2
3. Exothermic and endothermic changes

Difficulty: easy

2
4. Chemical changes

Difficulty: easy

2
5. Changes around us: Match the picture with options given

Difficulty: easy

2
6. Melting and vapourisation

Difficulty: medium

4
7. Reversible and irreversible changes

Difficulty: medium

4
8. Answer the questions about freezing and condensation

Difficulty: medium

4
9. Chemical changes

Difficulty: medium

4
10. Analyse the statements about changes

Difficulty: medium

4
11. Temporary Changes

Difficulty: medium

4
12. Exothermic and endothermic changes: select the correct option

Difficulty: medium

4
13. Types of chemical changes: statement and word match

Difficulty: medium

4
14. Types of changes and its examples

Difficulty: medium

4
15. Permanent changes

Difficulty: medium

4
16. Sublimation and crystallisation

Difficulty: medium

4
17. Process related to types of changes

Difficulty: medium

4
18. Changes in substances

Difficulty: medium

4
19. Reversible and irreversible changes

Difficulty: medium

4
20. Analyse the statements about changes

Difficulty: hard

6
21. Different states of water

Difficulty: hard

9
22. Find the different types of changes

Difficulty: hard

8
23. Assertion and reasoning for types changes around us

Difficulty: hard

6
24. Natural and man-made changes

Difficulty: hard

6

Tests

1. Training Test

Difficulty: medium

8
2. Training Test - II

Difficulty: medium

10

Teacher manual