Across
- 3. Unit for measuring Atomic Mass
- 4. Two or more elements and/or compounds physically in the same space but not bonded together
- 6. Pure substance that cannot be broken down
- 10. Holds a certain amount of electrons until it has to go to the next energy level
- 11. Tells how many protons there are in an element
- 13. Does not retain shape or volume
- 14. Group of electrons revolving around the nucleus
- 16. Subatomic Particle in the nucleus with a positive charge
- 17. Subatomic particle in the nucleus with a neutral charge
- 18. Retains volume but not shape
Down
- 1. The electrons that are on the last energy level of an atom
- 2. Says if there are more protons than electrons in an atom or vice versa
- 3. The mass of the subatomic particles in an element
- 4. Two or more atoms combined and the smallest unit of a chemical compound
- 5. Building block of all matter
- 7. subatomic particle that revolves around the nucleus and has a negative charge
- 8. Center part of an atom and contains the protons and neutrons
- 9. Table consisting information of all the elements
- 12. Retains shape and volume
- 15. Made of two or more elements chemically bonded