Across
- 4. the noble gases are said to be .......
- 6. this gas burns with a squeaky pop
- 7. type of reaction where energy is given out
- 8. substance which speeds up the reaction without being used up
- 10. this type of compound conducts when a liquid or in solution
- 11. group 7 on the periodic table
- 14. the chemical formula for carbon monoxide
- 17. compounds which end in this contain 2 elements
- 18. metal and non-metal oxides must be _______ to affect the pH of water.
- 19. 4 atoms
- 20. this gas relights a glowing splint
Down
- 1. this type of compound NEVER conducts
- 2. as the particle size decreases the speed of the reaction........
- 3. the particles found outside the nucleus
- 5. compounds which end in this contain oxygen
- 9. protons have a _________ charge
- 12. an element is made up of only one type of these
- 13. is the salt produced when hydrochloric acid reacts with sodium hydroxide
- 15. the chemical formula for magnesium oxide
- 16. type of reaction in which the pH of an acid is increased to 7