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5 Written Questions

5 Matching Questions

  1. volume percent (solution)
  2. partial pressure
  3. neutron
  4. substance
  5. specific heat
  1. a Matter that is homogeneous and has a definite, fixed composition; substances occur in two forms- elements and compounds.
  2. b The quantity of heat required to change the temperature of 1g of any substance by 1 degree C.
  3. c A subatomic particle that is electrically neutral and is found in the nucleus of an atom.
  4. d The volume of solute in 100 mL of solution.
  5. e The pressure exerted independently by each gas in a mixture of gases.

5 Multiple Choice Questions

  1. A substance that evaporates readily; a liquid with a high vapor pressure and a low boiling point.
  2. A covalent bond between two atoms with the same electronegativity value; thus, the electrons are share equally between the two atoms.
  3. In the VSEPR model, an arrangement where the pairs of electrons are arranged 180 degrees apart.
  4. An explanation of the general principles of certain phenomena with considerable evidence to support it; a well established hypothesis.
  5. SI unit of volume.

5 True/False Questions

  1. vapor-pressure curveA graph generated by plotting the temperature of a liquid on the x-axis and its vapor pressure on the y-axis. Any point on the curve represents an equilibrium between the vapor and the liquid.

          

  2. sublimationA system of a solvent and one or more solutes homogeneously mixed.

          

  3. meterAnything that has mass and occupies space.

          

  4. soluteThe substance that is dissolved in a solution.

          

  5. hydrogen bondMater without a uniform composition-- having two or more components or phases.

          

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