Atoms and Molecules

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Across
  1. 4. Substance that can neither be broken down nor converted to other substances by ordinary chemical means
  2. 5. Consists of two or more atoms which can be of the same or different elements
  3. 8. Substance that maintains a solution at a constant pH by accepting or releasing H+ in response to small changes in H+ concentration
  4. 13. Disrupt a protein’s shape making it nonfunctional
  5. 14. Unstable isotopes that emit energy called radiation
  6. 15. Positively or negatively charged atom
  7. 17. Water molecules stick together
  8. 18. Forms when atoms with partially full outermost electron shells share electrons
  9. 20. Covalent bond with unequal sharing of electrons such that one atom is relatively negative and the other is relatively positive
  10. 21. Building block monomer is nucleotides
  11. 22. Bond in which partially charged hydrogen and oxygen atoms attract different water molecules
Down
  1. 1. Make and break chemical bonds to form new substances
  2. 2. Atoms of the same element that have different numbers of neutrons
  3. 3. Attractive forces that hold atoms together in molecules
  4. 6. Liquid water molecules change to gas
  5. 7. Building block monomer is amino acids
  6. 9. Groups of atoms that attach to the carbon backbone and determine the characteristics and chemical reactivity of the molecules
  7. 10. Molecules that have a carbon skeleton and contain hydrogen atoms
  8. 11. Building block monomer is sugars or monosaccharides
  9. 12. Building block monomer is fatty acids
  10. 16. Covalent bond with equal sharing of electrons
  11. 19. Electrical attraction between oppositely charged atoms that holds them together