Question

list 20 examples of chemical changes without involving fire

Answer 1

Answer:

1. rusting

2. hydrogen sulphide reacting with silver

3. effect of o2 on copper

4. electrolysis

5. rotting of food

I only know 5

Answer 2

Answer:

.

.

.

.

➡Examples of Chemical Changes

➡Burning wood.

➡Souring milk.

➡Mixing acid and base.

➡Digesting food.

➡Cooking an egg.

➡Heating sugar to form caramel.

➡Baking a cake.

➡Rusting of iron.