Across
- 3. Process transforming substances into different ones
- 4. Basic unit of matter
- 8. Negatively charged subatomic particle
- 10. Substance composed of two or more elements
- 12. Sour taste, proton donor
Down
- 1. Substance speeding up chemical reactions
- 2. Unit of concentration
- 5. Two or more atoms bonded together
- 6. Bitter taste, proton acceptor
- 7. Atom with a net electrical charge
- 9. Force holding atoms together
- 11. Measure of acidity or alkalinity