Across
- 2. a vertical row on the periodic table
- 6. the number of protons and electrons
- 7. a negative part of an atom
- 9. an atom not bonded together
- 11. a table showing how much an atom weighs how many protons and electrons and what it is
Down
- 1. a positive part of the atom
- 3. more than one different element
- 4. a horizontal row on the periodic table
- 5. more than one element bonded
- 8. a neutral part of an atom
- 10. the smallest unit of matter