Chemistry Crossword

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

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