Changes and it's classifications. Science State Board, Class 6: lessons, tests, tasks.

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1.	Introduction
2.	Slow and fast changes
3.	Reversible and irreversible changes
4.	Physical change: changes in states of water
5.	Desirable and undesirable changes
6.	Natural and man-made changes
7.	Difference between physical and chemical change

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

1.	Training Test Difficulty: medium	8
2.	Training Test - II Difficulty: medium	10

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Changes and it's classifications