Across
- 2. The attractive force between 2 ions of opposite charge
- 4. Any substance that forms hydroxide ions in water
- 5. The first energy level holds how many electrons?
- 8. Where negatively charged particles are held
- 10. substance that can't be broken down into simpler substances
- 11. Group of atoms held together by a covalent bond
- 12. Forms a code for life
- 13. Example of a compound
- 15. The center of an atom
Down
- 1. Any substance that forms hydrogen ions in water
- 3. Composed of carbon, hydrogen, and oxygen
- 6. Sub units are amino acids
- 7. Chemical reactions that occur inside an organism
- 9. holds two hydrogen atoms together
- 14. Main function is long term energy storage