Chemistry Final Review

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centralgirl30096
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156069
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Chemistry Final Review
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2012-05-27 23:00:38
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Chemistry Final Review
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  1. Which of the following does NOT increase the rate of dissolcing a solid in water?

    A. raising the temperature
    B. using larger pieces of solid
    C. crushing a solid
    D. stirring
    B. using larger pieces of solid
    (this multiple choice question has been scrambled)
  2. In the expression like dissolves like, the word like refers to similarity in molecular
    polarity
  3. In sea water, sodium chloride is a
    solute
  4. A critical step in obtaining a super-sarurated solution is
    raising the temperature of the solution
  5. If a solution contains 50g of KNO3 in 100g of water at 50 degrees celsius it is said to be
    unsaturated
  6. What substance is known as the " universal solvent"?
    water
  7. Considering the phrase "like dissolves like", what sort of substance would be least likey to dissolve in water?
    Non-polar compounds
  8. Carbon dioxide gas is least likely to (stay) dissolved in which type of water solution?
    hot water solution
  9. To dilute an aqueous sample of hydrochloric acid you should
    pour some of the solution intp a container of water
  10. Acids taste
    sour
  11. Acids react with
    bases to produce salts and water.
  12. What is an Arrhenius acid?
    a chemical compound that increases the concentration of hydroger ions in aqueaous solution
  13. What is an Arrhenius base?
    a chemical compound that increases the concentation of hydroxide ions in aqueous solution
  14. The substances produced when KOH (aq) neutralizes HCI (aq) are
    H20(I) and KCI (aq)
  15. What is the pH of a neutral solution at 25 degrees celsius
    7
  16. The pH scale in gerneral use ranges from
    0-14
  17. The pH of an acidic solution is
    less than 7
  18. An acis-base titration involves
    neutralization reaction
  19. Which quantity is directly measured in a titration?
    volume
  20. Which of the following states that equal volumes of gases at the same temperature and pressure contain equal numbers of particles
    Avogadro's principal
  21. The ideal gas law states that
    PV=nRT
  22. In the ideal gas law,_____ represents the amount of gas present.
    n
  23. The conditions of STP are
    273 K and 1 atm
  24. The combined gas law can be written
    • P1V1 = P2V2
    • T1 T2
  25. The relationship between pressure and volume of a gas sample at a constant temperature and number of moles is described by
    Boyle's law
  26. What do the letters STP stand for?
    standard temperature and pressure
  27. One mole of neon gas at STP has a volume of
    22.4L
  28. What happens to the volume of a gas during compression?
    the volume decreases
  29. What is an example of gas diffusion?
    the oder of perfume spreading throughout the room
  30. What is an example of effusion?
    air slowley escaping from a pinhole in a tire
  31. Boyle's Law
    Pressure and volume changes at a constant temperature
  32. Charles' Law
    Temperature and volume changes at a constant pressure
  33. Combined Gas Law
    All conditions change ( P,T,V), except for the number of moles
  34. Gay-Lussac's Law
    Pressure and temperature changes at constant volume
  35. Ideal Gas Law
    Volume and number of moles, at constant temperature and pressure
  36. Things To Know
  37. Solutions
    -
    In general, solids are more soluble in liquids at a high temperature
    -In gerneral gases are more soluble in liquids at low temperature
    -To help a solute dissolve faster, agitate, crush, or heat
    -Water is the Universal Solvent. It's unique properties result from the facts that water is polar and exhibits hydrogen bonding.
  38. Acids and Bases
    - Arrhenius acids put hydrogen ( hydronium ) ion into a solution, their formulas start with H (Hydrogen)
    - Arrhenius bases put hydroxide ion into solution, their formulas end with OH
    -The reaction between an acid and a base is called "neutralization". The products of a neutralization reaction may be seen by removing

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