Across
- 1. type of electrons in the outer ring
- 5. molecule with more than one kind of atom
- 7. substance with only one kind of atom
- 8. elements that are good conductors of heat and electricity, malleable, and ductile
- 9. neutral subatomic particle
- 12. elements that are poor conductors of heat and electricity, and can be in any state of matter at room temperature
Down
- 2. where protons and neutrons are in an atom
- 3. positive subatomic particle
- 4. charged atom, either negative or positive
- 6. elements that are on the staircase on the Periodic Table
- 10. negative subatomic particle
- 11. basic building block of matter, means uncuttable in Greek