Across
- 2. A substance with pH<7
- 5. Discoveries in electromagnetism
- 6. Co-discovered DNA structure
- 9. Infectious particle
- 10. d=m/V is the formula for this
- 11. A charged particle
- 12. A group of similar cells performing a function
Down
- 1. Force acting on a unit area
- 3. plant pigment
- 4. Speeds up a chemical reaction
- 7. the lightest gas in the world
- 8. Essential building molecule