Across
- 4. You can test for carbon dioxide gas using this
- 5. Paper used to indicate whether something is an acid or base
- 6. The liquid in a solution
- 8. The chemical with the formula H2SO4
- 11. When a gas becomes a liquid
- 14. When an acid and a base 'cancel out' it is called__________
- 15. If heat and light are produced it must be a ________ change
- 16. A solid that can't be dissolved
- 18. Gives you the total number of protons and neutrons added together
- 19. Negatively charged particles which orbit the nucleus of an atom
- 20. A substance made up of two or more different types of atoms bonded together
- 23. A substance made up different atoms or compounds not bonded together
Down
- 1. The centre of an atom
- 2. The element with the symbol K
- 3. The state of matter where particles have the least energy
- 7. A change of state is known as a _________ change
- 9. Gives you the number of protons in an atom
- 10. The state where particles take the shape of a container
- 12. When a solid becomes a gas
- 13. All matter is made up of __________
- 17. The element with the symbol Hg
- 21. How you can check for hydrogen gas
- 22. Positively charged particles found in the nucleus of an atom