Across
- 2. - negative or positively charged atoms
- 4. - the ph of water
- 6. - the weak attraction between water
- 9. - forms from a partial positive charge and a partial negative charge
Down
- 1. - an atom with one less proton
- 3. - what do plants use to store sugar?
- 5. - center of a cell
- 7. - something that joins together with covalent bonds
- 8. - subunits in a hemoglobin