Chemistry Crossword

3. An atom or a group of atoms
5. Occurs when oxygen reacts with a substance to form a new substance and gives off energy
7. Substance Made of only one kind of matter
9. Solid to liquid
11. Have lustre,conduct electricity and have ductility
13. The numerical prefix of four
14. The ability of a substance to conduct electricity or heat
16. The numerical prefix of five
18. A material that cannot break down into any simpler substance
21. Have a high melting point
22. Pure substances formed as a result of the attraction between particles of opposite changes
23. An element is defined by the number of protons it has
24. The numerical prefix of one
25. Not shiny,dont conduct electricity and not ductile

1. The amount of mass in a given volume of a substance
2. A combination of two or more pure substance
4. The ability of a substance to be dissolved in another
6. Workplace Hazardous Material information system
8. The average mass of an element
10. Takes place when two or more substances combine to form new substances.
12. Can be in between metals and non-metals
15. The numerical prefix of two
17. change Occcurs when two or more materials react and create new materials. The
19. The numerical prefix of three
20. Liquid to solid