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5 Written questions

5 Matching questions

  1. Nonpolar Covalent Bonds
  2. Salt
  3. Aqueous Solution
  4. Heat
  5. Trace elements
  1. a A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
  2. b The amount of energy associated with the movement of atoms and molecules in a body of matter.
  3. c A solution in which water is the solvent.
  4. d an element that is essential for life but required in extremely minute amounts.
  5. e A compound resulting from the formation of ionic bonds; also called an ionic compound.

5 Multiple choice questions

  1. A molecule containing polar covalent bonds and having an unequal distribution of charges.
  2. A scale we used to describe how acidic or basic a solution is. The scale ranges from 0-14, 0 being the most acidic and 14 being the most basic. 7 is neutral (pure water)
  3. A substance that is dissolved in a solution.
  4. An atom's central core, containing protons and neutrons.
  5. A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules.

5 True/False questions

  1. Electron ShellsAn energy level representing the distance of an electron from the nucleus of an atom.

          

  2. IsotopesA substance that is dissolved in a solution.

          

  3. Fourth shell of an atom can contain how many electrons?2

          

  4. The nucleus of an atom contains...??A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.

          

  5. What 4 elements make up about 96% of living matter?Oxygen, carbon, hydrogen, and nitrogen.