Across
- 4. The smallest particle of a chemical element that can exist.
- 9. A chemical able to dissolve other substances.
- 11. A chemical that changes colour or becomes transparent depending on their temperature.
- 18. The ways in which CARBON is recycled in nature.
- 19. A state of matter where there are little or no force of attraction between particles.
- 23. Formed by the buried remains of plants and animals, a mixture of HYDROCARBON compounds.
- 24. The process of splitting up long-chain HYDROCARBONS.
- 25. A liquid easily evaporated at normal temperatures.
- 27. The process of separating CRUDE OIL into separate compounds.
- 29. An element we give the symbol C.
- 30. Long chain molecules that make up plastics.
- 31. The envelope of gases surrounding the earth or another planet.
- 32. A chemical able to be dissolved in a SOLVENT.
Down
- 1. The process of burning a substance to release energy.
- 2. The simplest HYDROCARBON that contains only single CARBON-CARBON bonds and HYDROGEN.
- 3. A subatomic particle with no electric charge.
- 4. Chemicals added to food to improve their flavour, colour or to make them last longer.
- 5. Single molecules that join together to make POLYMERS.
- 6. A subatomic particle with a positive electric charge.
- 7. A subatomic particle with a negative electric charge.
- 8. A chemical that absorbs natural light and releases it over time, making it glow in the dark.
- 10. A state of matter where there are some force of attraction between particles, but the particles are free to move.
- 12. An element that consists of only 1 PROTON and 1 ELECTRON.
- 13. A carbon compound contain an -COOG group.
- 14. The group of chemicals that give paints their colour.
- 15. A pleasant smelling carbon compound, made in a reaction between an ALCOHOL and CARBOXYLIC ACID.
- 16. A mixture of a SOLVENT and SOLUTES.
- 17. HYDROCARBON compounds that contain at least 1 double CARBON-CARBON bond and HYDROGEN.
- 20. Chemicals only containing CARBON and HYDROGEN.
- 21. A state of matter where there are strong forces of attraction between particles, holding them in a fixed position.
- 22. Molecules that help oil and water mix.
- 26. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
- 28. A carbon compound containing an -OH group.
