Question

2. A chemical change is always indicated by bubbling out of a gas.
3. Physical changes cannot be reversed, while chemical changes can be reversed.
nflatod a physical and an irreversible change occurs.
TAT​

Answer 1

Answer:

what we have to do in this

Explanation:

if there is true false then ans will be

1. false
2. true

Answer 2

Answer:

TRUE

Explanation:

IT WILL BE TRUE AS BUBBLING OF GAS INDICATES A CHEMICAL REACTION WHICH HAS OCCURED AND HENCE, IT IS CONSIDERED A CHEMICAL CHANGE.