Across
- 4. Oxygen, Heat & Fuel belong to the...
- 9. 78% of the air
- 11. A gas that emit from motor vehicles-starts with C
- 14. A chemical reaction that gives off heat
- 16. If salt is dissolved in warm water it is a ...?-starts with M
Down
- 1. What is the element with symbol of O?
- 2. Two different kinds of atoms joined together
- 3. A way to stop rusting-starts with G
- 5. Electrically charged particle
- 6. Metal corrosion is another word for...-starts with R
- 7. Form like a blanket in a blanket in the atmoshere
- 8. What is the smallest particle in an element
- 10. A chemical reaction thats makes surroundings colder
- 12. As,Br & I are what?
- 13. Another word for burning-starts with C
- 15. Carbon Dioxide is a ...?-Starts with C