Anonymous

What Are 9 Observations That A Chemical Change Has Occurred?

5 Answers

Laura Allardyce Profile
Laura Allardyce answered
1. Colour Changes
2. Smell Changes
3. Temperature Changes
4. Bubbles Appear
5. It Becomes Hard / Impossible to Reverse
6. Heat or Light is given off
7. Clearness Changes
Anonymous Profile
Anonymous answered
1. Colour changes
2. Bubbles form
3. It is hard, or almost impossible to reverse
4. The smell changes
5. Clearness/fogginess changes
6. Heat or light is given off

..that's all I know.
Anonymous Profile
Anonymous answered

If the mixture has formed into a solid or a gas

Anonymous Profile
Anonymous answered
What are some observations we could make that would indicate a chemical reaction has occurred?

Answer Question

Anonymous