Across
- 2. change of state from gas-liquid
- 3. speeds up the rate of reaction by offering an alternative chemical pathway with a lower activation energy
- 7. a process used to split long chain alkanes into shorter chains
- 9. a pollutant produced under high temperature/pressure when nitrogen and oxygen from the air react
- 11. A reaction that takes in energy from its surroundings
- 18. caused by carbon particulates
- 19. causes squeaky pop when lit splint added to it
- 21. A reaction that gives out energy to its surroundings
- 22. caused by carbon dioxide
- 23. A molecule made up of only hydrogen and carbon atoms
- 24. goes cloudy in presence of CO2
- 25. relights a glowing splint
Down
- 1. the minimum energy needed for a chemical reaction
- 4. a pollutant that results in acid rain
- 5. How thick a liquid is
- 6. orange-colourless in present of an alkene
- 8. a mixture designed as a useful product
- 10. when increased, particles have more energy
- 12. a pollutant produced by incomplete combustion
- 13. used to separate inks in a sample
- 14. a catalyst used in cracking
- 15. increases as the molecules become larger- stronger IMF forces
- 16. a pollutant produced by complete combustion
- 17. the number of particles in a given volume
- 20. water that is safe to drink is called...