Across
- 4. Speeds up a chemical reaction
- 8. Physical combination of substances
- 9. Biological polymer of amino acids
- 11. Negatively charged ion
- 12. Measure of disorder
- 15. Smallest unit of an element
- 18. Process where substances change
- 19. Same formula, different structure
Down
- 1. Substance that dissolves another
- 2. Negatively charged subatomic particle
- 3. Resists changes in pH
- 5. Same element, different neutron number
- 6. Molecule that binds to a metal center
- 7. Metal mixture
- 10. Atom or molecule with charge
- 13. Method to determine concentration
- 14. Scale for acidity
- 16. Region where an electron is likely found
- 17. Positively charged ion