Chemistry of Life

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Across
  1. 3. The center of an atom; contains protons and neutrons
  2. 4. Positively charged subatomic particles that make up atoms
  3. 7. Changing the temperature of water from cold to warm requires
  4. 9. Type of bond that involves sharing electrons
  5. 11. Molecules that that make up living things an contain carbon are called___ Molecules
  6. 13. Large molecules made of many small subunits
  7. 14. Shows elements arranged in order by atomic number: the_______ table
  8. 16. Weak interactions responsible for the "sticky feet" of geckos:___ Forces
  9. 18. Type of bond that involves sharing electrons
  10. 19. Type of bond that causes water to stick to other things
Down
  1. 1. Neutral subatomic particles found in the nucleus of an atom
  2. 2. Formed between water molecules; type of weak bond:________bond.
  3. 5. Compounds that consist of chains of carbon
  4. 6. A large amount of energy is needed to change water temperature; it has a high heat_____
  5. 8. _________refers to molecules that have partial negative and positive charge
  6. 10. Type of bond that causes water to stick with other water molecules
  7. 12. Substances that consist of two or more elements
  8. 15. Substances that consist of only one type of atom
  9. 17. Lactase is an_____ that breaks down milk sugar
  10. 20. Negatively charged subatomic particles that make up atoms