Across
- 2. smallest part of element
- 5. negatively charged particle
- 8. when an element has metals in it
- 9. a set of at least two atoms
- 10. right side of periodic table is ______
- 12. left side of the periodic table is ______
- 15. rows go from left to right on periodic table
- 16. anything that takes up space and has mass
- 17. atomic number is 1
- 18. a pure substance that consists of one kind of atom
Down
- 1. when a element has no metals
- 3. outside of energy rings
- 4. in nucleus and have positive charge
- 5. the big letters on an element card
- 6. has neutral charge and is about the same mass of proton
- 7. run up and down on periodic table
- 9. how much something weighs
- 11. electrons arrange into these rings
- 13. the small number on an element
- 14. when heat and light do not pass through