Across
- 2. Uneven distribution of charges within a molecule
- 5. Protein that speeds up chemical reactions in cells
- 8. Contains carbon and is found in living things
- 9. Smallest unit of matter that retains the properties of an element
- 11. Molecule Two hydrogen atoms bonded to one oxygen atom
- 13. Substance formed when two or more elements chemically bond
- 14. Negatively charged subatomic particle found outside the nucleus
- 15. Attraction between molecules of the same substance
Down
- 1. Atom Element that forms four covalent bonds and is the backbone of life
- 3. Attraction between molecules of different substances
- 4. Neutral subatomic particle found in the nucleus
- 6. Positively charged subatomic particle found in the nucleus
- 7. Energy Energy required to start a chemical reaction
- 10. Pure substance made of only one type of atom
- 12. Small building block molecule that makes up a polymer