1. Writing Chemical Reactions 4.1

2. Reactants Before the reaction takes place

3. Products After the chemical took place

4. Law of Conservation of Matter

5. Some Chemical Symbols

6. Proof of a chemical reaction Light generated

7. Proof of a chemical reaction Temperature Change – Exothermic

8. Proof of a chemical reaction Temperature Change – Endothermic The water between the beaker and wood froze and linked them.

9. Proof of a chemical reaction Gas forms

10. Proof of a chemical reaction Precipitate forms

11. Proof of a chemical reaction Color change