S3 Chemistry - Unit 1

1234567891011121314151617181920
Across
  1. 4. the noble gases are said to be .......
  2. 6. this gas burns with a squeaky pop
  3. 7. type of reaction where energy is given out
  4. 8. substance which speeds up the reaction without being used up
  5. 10. this type of compound conducts when a liquid or in solution
  6. 11. group 7 on the periodic table
  7. 14. the chemical formula for carbon monoxide
  8. 17. compounds which end in this contain 2 elements
  9. 18. metal and non-metal oxides must be _______ to affect the pH of water.
  10. 19. 4 atoms
  11. 20. this gas relights a glowing splint
Down
  1. 1. this type of compound NEVER conducts
  2. 2. as the particle size decreases the speed of the reaction........
  3. 3. the particles found outside the nucleus
  4. 5. compounds which end in this contain oxygen
  5. 9. protons have a _________ charge
  6. 12. an element is made up of only one type of these
  7. 13. is the salt produced when hydrochloric acid reacts with sodium hydroxide
  8. 15. the chemical formula for magnesium oxide
  9. 16. type of reaction in which the pH of an acid is increased to 7