Question

Write condition they tell us the chemical reaction has taken place.Give one example for each.

Answer 1

for checking chemical reaction is proceeding;

colour change

precipitation formation

liberation of gas

state change

etc

Answer 2

Heya !!

Here is your answer :-


IDENTIFICATION OF CHEMICAL REACTION
__________________________________

1. Change in colour

2. Change in state

3. Change in temperature

4. Evolution of gas

5. Formation of a precipitate



Hope this helps you.