Across
- 5. table of elements chemical elements organized by atomic number
- 8. a row
- 9. a electrically neutral group of two or more atoms chemically bonded
- 10. negative
Down
- 1. number of a chemical element
- 2. smallest unit of matter
- 3. a column
- 4. neutral
- 5. positive
- 6. different elements chemically combined
- 7. made up of its own type of atom