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