Across
- 4. A row in the periodic table where elements have the same number of electron shells
- 6. A separation method that removes solids from liquids based on particle size
- 8. Elements on the right side of the periodic table that tend to gain electrons
- 9. A column in the periodic table with elements that share outer electron numbers
- 10. A positively charged particle found in the nucleus
- 12. A subatomic particle with no charge found in the nucleus
- 14. A basic building block of matter
- 15. A combination of substances not chemically bonded together
- 16. A type of change that creates a new substance with different properties
- 19. A way of describing a chemical reaction using words or symbols
- 20. The new substances formed in a chemical reaction
- 21. A solid that forms from a chemical reaction in a solution
Down
- 1. An energy level that holds electrons in an atom
- 2. A process that separates liquids by their boiling points
- 3. A process where substances change into new substances
- 5. Emission of this may indicate a chemical change (e.g. burning)
- 7. A change in this can indicate energy being released or absorbed in a reaction
- 9. A sign of a chemical change, often seen as bubbles or fizzing
- 11. Elements on the left side of the periodic table that tend to lose electrons
- 13. A negatively charged particle found in electron shells
- 17. An indicator of a chemical reaction involving a permanent change in appearance
- 18. The starting substances in a chemical reaction