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5 Written questions

5 Multiple choice questions

  1. atoms that have positive or negative charges
  2. water expands [because water molecules are kept seperated], and becomes less dense
    floats in liquid water
  3. Strong cohesion [attraction between water molecules]
    occurs because of hydrogen bonding
    High Surface Tension -- creates a water surface that is firm enough to allow insects to walk upon it
  4. the chemical bond that forms when electrons between atoms are shared
    occurs when electronegatives are similar
  5. when electrons are shared equally
    electronegativities are equal

5 True/False questions

  1. Water -- AdhesionAdhesion is the attraction between the unlike substances
    demonstrates capillary action

          

  2. electronegativitytbe ability of an atom to attract an electron.
    most electronegative: F, O, N

          

  3. Water having a high heat capacityionic and polar substances dissolve in the water.
    hydrophillic vs hydrophobic

          

  4. Ionic bondsthe chemical bond that forms between two atoms when one or more electrons are transformed from one atom to anohter.
    happens when the electronegatives differ
    creates ions

          

  5. moleculeswater expands [because water molecules are kept seperated], and becomes less dense
    floats in liquid water