Question

write any three chemical changes with suitable reaction for Grade 7​

Answer 1

Explanation:

Burning wood.

Souring milk.

Mixing acid and base.

Digesting food.

Cooking an egg.

Heating sugar to form caramel.

Baking a cake.

Rusting of iron.

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Answer 2

Explanation:

rusting of iron, photosynthesis of plant and falling of leaves