Chemical energetics and reactions

Question 1

What is the difference between a physical and chemical change?

Answer 1

Physical changes do not produce and new chemical substance and can revert back to the original form. Chemical changes are irreversible and form new products.

Question 2

Give examples of chemical changes?

Answer 2

Baking a cake, burning a match

Question 3

GIve examples of physical changes?

Answer 3

Ice melting, boiling tea.