Question

write three differences between physical change and chemical change​

Answer 1

Answer:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.

Answer 2

➠ AnSwer :-

• A chemical change is a permanent change.
• A Physical change affects only physical properties i.e. shape, size, etc.
• Some examples of physical change are freezing of water, melting of wax, boiling of water, etc
• A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
• Physical and chemical change are different because a physical change stays the same and does not change the substance, where as chemical change makes the substances react and makes another substance.