Across
- 2. small group of non-metal atoms
- 4. point in a titration when the indicator changes colour
- 6. a carboxylic acid
- 7. the observation made when a dilute acid reacts with a carbonate
- 10. formed in the engine of a car from the air
- 12. break down of a compound into its elements using electricity
- 15. burns with a red-orange flame
- 19. regular arrangement of particles
- 20. a weak base
- 21. ion that produces a yellow precipitate with acidified silver nitrate
- 22. gain of electrons
- 24. organic compound with the same molecular formula but a different structure
- 25. equipment used to measure out one volume accurately
- 27. reaction in which heat energy is released
Down
- 1. liquid non metal element
- 3. bond breaking
- 5. an indicator that is pink in alkali and colourless in acid
- 8. production of ethanol using sugar and yeast
- 9. a solution of calcium hydroxide
- 11. colour of the precipitate formed when iron II ions react with sodium hydroxide
- 13. gas produced when metals react with acid
- 14. formula which shows just the simplest ratio of atoms
- 16. a saturated hydrocarbon
- 17. substance that provides an alternative route to the products with a lower activation energy
- 18. fraction from crude oil used for road surfacing
- 23. a charged particle
- 24. atom with the same number of protons and a different number of neutrons
- 26. breaking down of a long chain hydrocarbon into smaller alkanes and alkenes