Question

write any 2 differences between physical change and chemical change

Answer 1

Answer:

physical changes

1) in physical change only the shape , state and colour will be change

2) the properties will not be changed

3) ex = melting of ice and evaporation of water

chemical changes

1) in chemical change the properties of matter wwilclhange

2) ex= rusting of iron , ripping of mango etc

Answer 2

Answer:

1. In a physical change, the molecules are rearranged while their actual composition remains same.

1. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed.

2.Some example of physical change are freezing of water, melting of wax, boiling of water, etc.

2.A few examples of chemical change are digestion of food, burning of coal, rusting, etc.