Question

ACROSS
1. Changes during a chemical reaction. (11)
2. Physical change is. (9)
3. Burning of this involves both physical and chemical
changes. (6)
4. On heating all forms of matter. (6)
5. Glowing of an electric bulb. (10)
DOWN
6. Type of changes in a growing tree. (8)
7. Type of change during melting of wax. (8)
8. Effect of cooling on solids. (8)​

Answer 1

Answer:

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Explanation:

this ans