Question

Can you please help me

Answer 1

1. law of conservation of mass
2. coefficient
3. products
4. reactants
5. oxygen or hydrogen but not sure
6. chemical reaction
7. chemical equation

Answer 2

1.Law of Conservation of Mass/Matter

2.coefficients

3. Combustion

4. Activation energy

5. Catalyst

6. New combinations are called compounds

7. Chemical reactions

Step-by-step explanation: