Question

Classify the following as chemical or physical changes.
(1) cutting of trees
(2) melting of butter in a pan
(3) rusting of almirah
(4) boiling of water to form steam
(5) passing of electric current through water and the water breaking down into hydrogen and oxygen
(6) dissolving common salt in water
(7) making a fruit salad with raw fruits
(8) burning of paper and wood

Answer 1

1.chemical change
2.chemical change
3.chemical change
4.physical change
5.chemical change
6.physical change
7.chemical change
8.chemical change

Answer 2

1. Physical change

2. Physical change

3