Across
- 3. Gas changes to a liquid. (12)
- 4. A substance made from only one type of atom. (7)
- 7. A change where no new substance is formed. (8)
- 8. A mixture where a solid dissolves in a liquid. (8)
- 11. The total number of protons and neutrons. (4)
- 12. Liquid changes into a solid. (9)
- 15. A chart showing all known elements. (8,5)
- 16. Water changes from liquid to gas by this process. (11)
- 18. A method used to separate dissolved solids from liquids. (13)
- 22. The substance that dissolves. (6)
- 23. A reaction that gives out heat. (11)
- 25. Space taken up by an object. (6)
- 28. A method used to separate insoluble solids from liquids. (10)
- 29. Produced when an acid reacts with a metal. (8)
- 31. The reaction between an acid and an alkali. (14)
- 32. The smallest particle of an element that can exist. (4)
- 35. A substance with a pH above 7. (4)
- 36. A material made from two or more substances not chemically joined. (7)
- 37. The liquid that does the dissolving. (7)
Down
- 1. Solid changes directly into a gas. (11)
- 2. A change that cannot easily be reversed because a new substance forms. (8)
- 3. A substance that speeds up a reaction without being used up. (8)
- 5. A reaction that takes in heat. (10)
- 6. The particles in a gas spread out by this process. (9)
- 9. The energy needed to start a reaction. (10)
- 10. A measure of how fast a reaction happens. (4)
- 11. Anything that has mass and takes up space. (6)
- 13. A method used to separate liquids with different boiling points. (12)
- 14. A substance formed when elements chemically join together. (8)
- 17. Particle with no electrical charge. (7)
- 19. A scale used to measure acidity or alkalinity. (2)
- 20. The centre of an atom containing protons and neutrons. (7)
- 21. Positively charged particle in the nucleus. (6)
- 23. Negatively charged particle found outside the nucleus. (8)
- 24. A property that measures how hot or cold something is. (11)
- 26. The three common forms of matter are solid, liquid and _____. (3)
- 27. The number of protons in an atom. (6)
- 30. The amount of matter in an object. (4)
- 33. Solid changes into a liquid. (7)
- 34. A substance with a pH below 7. (4)