Chemistry

4. chemical formulas that show the arrangements of atoms in molecules
11. definite shape, definite volume
12. principle that states electron enter orbitals of the lowest energy level first
14. negatively charged atom
15. starting substance in a chemical reaction is called
17. used to write chemical formulas shorthanded
19. the lowest energy level
21. substance in the gaseous state, liquid or solid at room temperature
22. compound of sodium and chlorine
23. Atoms will lose, gain or share electrons to achieve the electron configuration of the nearest noble gas
25. matter that has a uniform and definite composition
26. deoxyribose nucleic acid
27. consist of DNA
29. the distance between the crests

1. attraction between atoms that allows the formation of chemical substances that contain two or more atoms
2. amount of matter the object contains
3. electrons in the highest occupied energy level
5. reaction where one or more substance change into new substance
6. anything that has mass or takes up shape
7. the substance formed in a chemical reation is called
8. indefinite shape, definite volume
9. charged atoms
10. the "electron shells" of an atom
13. light quanta
16. the number of wave cycles to pass a given point per unit of time
18. the wave's height from the origin to the crest
20. group 8 has 8 valence electron
24. positively charged atom
28. energy needed to move an electron from 1 energy level to a higher energy level
30. indefinite shape, indefinite volume