Across
- 1. Substance made of only one type of atom
- 3. Group 7 non-metals
- 5. Positively charged subatomic particle
- 12. Variable that is changed during a practical
- 14. Describes a solid that will not dissolve
- 16. Changing from a liquid to a solid
- 17. ________ gases Group 0 elements
- 20. Russian scientist who produced the modern periodic table
- 21. Technique used to separate soluble solids from liquids
- 25. _______ table contains all the known elements
- 27. Technique used to separate liquids with different boiling points
- 29. Variable that stays the same during a practical
- 32. Neutral subatomic particles
- 33. Negatively charged subatomic particles
Down
- 2. Changing from a liquid to a gas
- 4. Substance that turns purple in universal indicator
- 6. Centre of the atom
- 7. Substance made from two or more different substances not chemically bonded
- 8. Two or more atoms bonded together
- 9. Changing from a gas to a liquid
- 10. Variable that is measured during a practical
- 11. Describes a solid that will dissolve
- 13. metals Metals found in the middle of the periodic table
- 15. Changing from a solid to a liquid
- 18. ______ burner, equipment used to heat things
- 19. Substance made from two or more different atoms bonded together
- 22. ______ metals Group 1 metals
- 23. Technique used to separate insoluble solids from a liquid
- 24. Chemicals that have a tangy taste
- 26. shell Location of electrons within an atom
- 28. Safety equipment that must be worn properly
- 30. Colour of a neutral solution in universal indicator
- 31. Smallest thing in the universe