Across
- 3. There are roughly 114 of these in the periodic table
- 4. When you dip metal into zinc
- 9. What is this symbol - CO2
- 11. what gas is roughly 78%in the air
- 13. a scientific word for burning
- 14. The smallest particle
- 16. The product of a random distribution which isnt chemically joint
Down
- 1. A reaction that gives off heat
- 2. The smallest particle which consists of atoms bonded together
- 5. The particle with either a positive or negative charge
- 6. Carbon dioxide is a type of the gas family
- 7. This happens to metal when it exposes with air and water
- 8. What contains fuel,heat and oxygen
- 10. A rection that takes in heat
- 12. something that is formed from 2 or more elements that are chemically united in a fixed proportion
- 15. what gas is roughly 21%in the air