Across
- 2. a slow chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy
- 3. the amount of mass in a given volume of a substance
- 4. a substance that can be pounded or rolled into sheets
- 6. change that results when two or more substances react to create a different substance
- 8. energy stored in chemicals and released when chemical react
- 9. a combination of pure substances
- 10. change of state from a liquid to a solid
- 12. made up of only one kind of matter and has a unique set of properties that sets it apart from any other kind of matter
- 13. change in appearance or state of a substance that does not change the composition
- 16. a substance's ability to resist being scratched
- 17. property that describes the physical appearance and composition of a substance
- 22. when a substance is at the temperature at which its liquid phase changes to the gas phase
- 23. a chemical change, which releases heat energy
Down
- 1. an experiment in which all reactants and all products of a chemical reaction all accounted for
- 5. any solid that can be stretched into a long wire
- 6. a chemical reaction that takes place in the cells in your body
- 7. a chemical change, which absorbs heat energy
- 11. when a substance is at the temperature at which it changes from a solid to a liquid
- 14. the shape of a substances's crystals can help identify it
- 15. chemical combination of two or more elements in a specific ratio
- 18. the ability of a substance to conduct electricity or heat
- 19. an experiment in which one or more products of a chemical reaction can escape
- 20. a material that cannot be broken down into any simpler substance
- 21. the ability of a substance to be dissolved in another