Across
- 3. Law that matter is not created or destroyed
- 5. Reaction combining substances.
- 7. Shiny element that conducts electricity.
- 8. A solid that forms when two liquids react
- 11. Physically combined substances.
- 15. Region where electrons are found.
- 16. Homogeneous mixture.
- 17. Outer shell electrons.
- 20. Symbolic representation of reaction.
- 23. Atom with different neutron count.
- 25. Substance formed in a reaction.
- 28. Reaction with oxygen (burning).
- 29. Basic unit of a chemical element.
- 31. Bond between charged ions.
Down
- 1. Positively charged particle.
- 2. Number in front of a formula.
- 4. Neutral particle in the nucleus.
- 6. Reaction breaking down compounds.
- 9. Reaction that releases heat.
- 10. Starting substance in a reaction.
- 12. Negatively charged particle.
- 13. Small number for atom count.
- 14. Bond where electrons are shared.
- 18. Dense center of an atom.
- 19. Speeds up reaction without being used.
- 21. Atoms bonded together.
- 22. Reaction that absorbs heat.
- 24. Substance that cannot be broken down.
- 26. Substance of two or more elements.
- 27. Charged atom or molecule.
- 30. Force holding atoms together.