Physical & Chemical Changes

Question 0

What are five possible clues for chemical change

Answer 0

1. bubbles form
2. Heat/light is produced
3. A solid is formed in a liquid
4. The color changes
5. Usually difficult to reverse
   (optional) an odour occurs

Question 1

What is the difference between a physical and chemical change

Answer 1

Physical change is a change of state, dissolving- usually reversible
In Chemical change a new substance is formed: with new chemical properties