ISC Chapter 10

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  1. The structure of the water molecule explains the following properties of water EXCEPT its
    D. color
  2. Water is a (an)
    C. polar covalent compound
  3. The total number of valence electrons for water is
    C. 8
  4. The concentration of contaminants in drinking water is generally reported in units of
    D. ppm
  5. An example of the rule "like dissolves like" is
    D. oil and grease
  6. The molarity of a solution containing 58.5 grams of sodium chloride, NaCl, in two liters of solution is
    C. 0.5 M
  7. The vapor pressure of a solution is ____________ the vapor pressure of a pure solvent
    C. less than
  8. The addition of a pinch of salt to a pot of water before boiling
    D. all of these
  9. Salt is spread on icy roads because it
    A. lowers the freezing point of water
  10. A common base that is found in your home is
    C. milk of magnesia
  11. A common acid that is found in your home is
    C. vinegar
  12. A strong acid ionizes completely in water. Which of the following is NOT considered a strong acid?
    C. hydrofluoric acid
  13. The estimated pH of Alka Seltzer is
    C. 8
  14. The estimated pH of strawberry jam is
    B. 6
  15. The major use for water in the average home is for
    C. toilets
  16. Surface water is obtained from all of the following EXCEPT
    A. oceans
  17. Your body is approximately _____ % water
    B. 70
  18. Hydrogen bonds can form between a hydrogen atomand a
    A. fluorine atom
  19. A molecule with a positive end and a negative end is called a
    A. polar molecule
  20. A homogeneous mixture of ions or molecules of 2 or more substances is called a
    C. solution
  21. The material present in a solution in the largest amount is the
    A. solvent
  22. The attraction of water molecules for ions which results in the orientation of the positive ends of the water molecule towards the negative ends of the salt ion the crystal is called
    B. hydration
  23. Fluids that mix in any proportion without separating into phases are called
    A. miscible
  24. The relative amount of solute and solvent in a solution is defined as the
    C. concentration
  25. All of the following are concentration terms EXCEPT
    D. weight
  26. The molarity of a solution is the total number of moles of solute per
    B. one liter of solution
  27. A solution where a state of equilibrium exists between the dissolving solute and solute coming out of solutionis:
    B. saturated
  28. The solubility of most ionic salts in water
    A. increases with temperature
  29. Ionic substances that dissolve in water and conduct an electric current are called
    D. electrolytes
  30. The temperature at which the vapor pressure is equal to the average atmospheric pressure at sea level is called the
    B. normal boiling point
  31. The temperature at which a liquid undergoes a phase change to the solid state at normal pressure is the
    B. freezing point
  32. "Hard" water results from the presence of
    A. Ca or Mg ions
  33. Some covalent compounds such as HCl, become electrolytes through the process called
    A. ionization
  34. Which of the following is NOT a property of an acid?
    B. changes litmus from red to blue
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ISC Chapter 10

ISC Chapter 10
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