Question

Fill in the blanks
1 ) the temperature at which a liquid changes into vapour is called
2) breaking of coal into smaller pieces is a ___ change
3) a new substance is formal in a ____change​

Answer 1

Answer:

1) The boiling point

2) Physical change (as no new substance is formed after breaking the coal,the coal stays the same just it is smaller pieces)

3) chemical change

Answer 2

Explanation:

1) boiling point

2) physical

3) chemical