Across
- 3. Prefix for 1000
- 5. Hydrogen and a nonmetal element
- 7. Composed of two different nonmetals
- 8. A negatively charged ion
- 11. Composed of only one type of atom or molecule
- 12. Tentative explanation for observations
- 14. Science that seeks to understand how matter behaves by studying the behavior of atoms and molecules
- 18. Atoms or molecules arranged in geometric patterns
- 19. The basic particles of elements
- 20. Phase change from gas to solid
Down
- 1. More than one atom
- 2. value of y when x=0
- 4. State of matter with indefinite shape and definite volume
- 6. ____= mass/volume
- 9. Explains what will happen
- 10. Explains why something happens
- 13. A positively charged ion
- 15. Prefix for 7 in binary molecular compounds
- 16. Phase change from liquid to solid
- 17. Cannot be created or destroyed