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5 Written questions

5 Multiple choice questions

  1. 1. Universal Solvent
    2. High Heat Capacity
    3. Ice
    4. Strong Cohesion/High Surface Tension
    5. Adhesion
  2. atoms that have positive or negative charges
  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. Adhesion is the attraction between the unlike substances
    demonstrates capillary action
  5. ionic and polar substances dissolve in the water.
    hydrophillic vs hydrophobic

5 True/False questions

  1. moleculestwo or more atoms held together by chemical bonds

          

  2. 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

          

  3. polar covalent bondwhen the electrons aren't shared equally
    unequal distribution of charges
    \electrons are closer to the atom with the greater electronegativity and produces a negative charge

          

  4. nonpolar covalent bondwhen electrons are shared equally
    electronegativities are equal

          

  5. Hydrogen bondweak bonds between molecules
    form when H+ is in a covalent bond, but is attracted to another molecule [usually with a high electronegativity] in another covalently bonded molecule

          

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