Across
- 2. made of more than one type of pure substance
- 3. a __ change results in a new substance being formed
- 7. made of one type of atom
- 8. an atom with a charge
- 10. also known as rusting, happens when a metal reacts with oxygen
- 13. change from liquid to gas
- 14. compounds that contain a metal and a non-metal
- 15. negative subatomic particle
- 16. neutral subatomic particle
- 19. solid, liquid or gas
- 20. compounds that contain non-metals and no metals
- 22. contains more than one different type of atom
- 23. a change in the state of matter is known as a _ change
- 24. have properties of both metals and non-metals
Down
- 1. a reaction that releases heat
- 3. change from gas to a liquid
- 4. positive subatomic particle
- 5. a reaction that absorbs heat
- 6. burning reaction which requires oxygen and produces carbon dioxide
- 9. change from solid to gas
- 11. increases rate of reaction without being involved in the reaction
- 12. a table that organizes all of the elements
- 17. mixture whereby the different parts cannot be seen, appears pure
- 18. the smallest part of an element
- 21. contains more than one atom, may be an element or a compound