Across
- 1. shares electrons
- 4. links between atoms in a substance
- 6. NaCl
- 7. happening at the same time
- 8. transfers electrons
- 9. protons,neutrons, electrons
- 10. found on the periodic table
Down
- 2. outside the outermost shell of an element
- 3. you have created a new substance
- 5. holds groups of atoms