Across
- 3. Vertical columns of elements
- 7. positively charged particle
- 9. Number of electrons donated or received to form stable configuration
Down
- 1. substance made up of more than one element
- 2. substance made up of one type of atoms
- 4. table
- 5. K is the symbol for this element
- 6. if an atom donates or accepts electrons
- 8. Horizontal rows of elements
- 10. smallest particle of a substance