Across
- 4. two or more different elements chemically joined
- 5. joins elements together
- 6. how the "a" in the symbol for sodium should be
- 7. where non metals are found in the periodic table
- 13. contains genetic information.
- 14. when there are different elements and/or compounds not chemically combined
- 16. what the "2" in H20 should be shown in
- 18. a common acid
- 21. the most abundant gas in the air
- 23. found on the periodic table
Down
- 1. combines with iron to make rust
- 2. the number of atoms in a hydrogen molecule
- 3. found in group 0
- 4. a method of burning wax to create light
- 8. the smallest atom
- 9. has two hydrogens and an oxygen
- 10. an element that is liquid at room temperature
- 11. the number of atoms in methane
- 12. nitrogen,oxygen and hydrogen like to be in a...
- 15. has an atomic number of 86
- 17. number of atoms in a sulphur dioxide molecule
- 19. found on the left hand side of the periodic table
- 20. ______ elements are either solids or gases.
- 22. how many oxygen atoms in a molecule of carbon dioxide