SOAP SCIENCE #1

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Across
  1. 2. Structure that traps oily dirt inside soap molecules
  2. 4. Water-avoiding part of a surfactant that sticks to oil
  3. 8. How tightly matter is packed in a substance
  4. 9. Group of atoms bonded together
  5. 11. Water-loving part of a surfactant molecule
  6. 12. To spread evenly into a liquid
Down
  1. 1. Tight “skin” that forms on water’s surface; surface _____
  2. 3. Attraction between water and other materials
  3. 5. Water moving upward through narrow spaces; _____ action
  4. 6. Having positive and negative regions in a molecule
  5. 7. Molecule that helps water mix with oil and grease
  6. 10. Attraction between water molecules