Chemical reactions

4. what reacts in a chemical reactions.
8. Representation of chemical reaction
9. The ___________ greenhouse effect takes place when the amount of gasses increase significantly.
10. The proportion of chemical ecuations it is given by coefficients ___________.
14. One reagent gives two products.
15. It is produced when gasses are emited into the atmosphere and react with water vapour.
16. The weight of a molecule.

1. If we mix bleach with mouthwash it is produced a change _______.
2. It's a factor that can increase the rate of a chemical reaction.
3. Several reagents give one product.
5. what is formed in a chemical reaction.
6. combination of atoms.
7. Mixing vinegar and bicarbonate generates a
11. The _______ layer absorbs ultraviolet radiation, which is harmful to health.
12. In a chemical reaction there can be light and energy _________.
13. Scientific who demonstrated mass conservation.
17. Chemical product that we use to clean.