Question

5.
WRITE ONE WORD FOR THE FOLLOWING
1. A change which cannot be easily reversed
2. A change in which no new substance is formed
3. A change which is generally irreversible
4. A change which takes a long time to happen
5. A change which occurs immediately​​

Answer 1

Answer:

1. Chemical change

2. Physical change

3. Chemical change

4. I don't know

5. I think it is rapid change