Chemistry Exam 2 Review

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Chemistry Exam 2 Review
2011-02-24 12:05:33
Chemistry Exam Review

Review for Test 2
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  1. Which of the following statements is not part Dalton's atomic theory?

    a) Matter is composed of atoms.

    b) Atoms of the same element have the same properties

    c) Compounds form when atoms of different elements combine in fixed proportions

    d) Atoms change into other atoms in chemical reactions.
    d) Atoms change into other atoms in chemical reactions.
  2. In Ernest Rutherford's gold foil experiment, most of the alpha particles passed directly through the foil. This lead to the condlusion that:
    Most of the volume of the atom is empty space
  3. Isotopes of the same element have:
    The same number of protons, but differnt numbers of neutrons.
  4. Oxygen has 3 isotopes: Oxygen-16, Oxygen-17, and Oxygen-18. The atomic mass of oxygen is 15.999 amu. Which of the 3 isotopes has the highest natural abundance?
  5. What is a good Acronym for the Block system on the Periodic Table?
    SDPF (SD card Por Favor)

  6. In periodic Table Which Side is Group and Which side is period?
    Top is Group

    Side is Period
  7. In periodic Table Which Side is Group?
    Top is Group
  8. In periodic table which side is period?
    Side is Period
  9. In Periodic Table what is the order of the metals.
    AAT Nothing HN LA

    1 - Alkali Metals

    2 - Alkaline earth Metals

    3 - Transitional Metals

    4 - nothing

    5 - Halogens

    6 - Noble gases

    7 - Lanthanides

    8 - Actinides

  10. What are the Charges in the specific Groups in the Periodic Table?
    Hint: (+1, +2 from left to right)


    (0, -1, -2, -3, skip one, +1, +2, +3 from right to left)
  11. How do I find the charge of a cation.

    (A cation is a metal that has a charge combined with those that don't have a comon charge)
    It has to balance out to Zero.

    i.e. in FeCl3

    Fe has no comon charge but Cl has a -1 charge. Since there are 3 Cl the charges add up to -3. To balance out to Zero Fe has to have +3 Charge.

    The answer is +3
  12. What is a limiting Reactant (or Limiting Reagent)?
    The reactant that is completely consumed before the others are used up, at which point the reactant will come to a stop.

    • The reactant that is completely consumed.
  13. You want to make sandwhiches. You have a full jar of peanut butter, a full jar of Jelly, and 4 slices of bread. What will be the limiting reagent?

    a) bread
    b) peanut butter
    c) jelly
    d) peanut butter and jelly
    a) peanut butter
  14. What are the 7 diatomic elements?
    • if you draw a line from Period 2 Group 15-17 then four more down you make the number 7. That's six of the diatomic elements. The Seventh is Hydrogen.
    • I Bring Clay For Our New Home:

    • Hydrogen (H2)
    • Nitrogen (N2)
    • Oxygen (O2)
    • Fluorine (F2)
    • Chlorine (Cl2)
    • Iodine (I2)
    • Bromine (Br2)
  15. When speaking of Protons Neutrons and Electrons what 3 things do you have to remember?
    1 - Protons are on the Bottom

    2 - There are always the same amount of Protons & Electrons

    3 - Top has Protons & Neutrons combined
  16. What is lambda ?
    wavelength (nm) <-- remember abreviation.
  17. What is C?
  18. Speed of light - always m/s (meters per second)
  19. What is v(nu)?
    Frequency (measured in h or Hz)
  20. What is E?
  21. What are the rules to naming Covalent Compounds?
    If letter starts with a vowel omit the letters a or o from the end of the prefix .

    add a ide in the end of the second element

    omit mono only on the first element

    • i.e. Carbon MonoOxide CO2
    • or

    i.e. Dihydrogen monosulfide H2S
  22. What is Prefix for 1?
  23. What is Prefix for 2?
  24. What is Prefix for 3?
  25. What is Prefix for 4?
  26. What is Prefix for 5?
  27. What is Prefix for 6?
  28. What is Prefix for 7?
  29. What is Prefix for 8?
  30. What is Prefix for 9?
  31. What is Prefix for 10?
  32. What is covalent?
    • When two elements from periodic Table are added that are both positive
  33. What is ionic?
    When a positive and negative Charge element is mixed.
  34. What does it mean when it has a roman numeral (III) ?
    When in the periodica table it doesn't have a common charge it's telling you what the charge is.
  35. What do you need to remember when Balancing equations?
    They need to be equal on both sides.
  36. What is the Molar Mass? Mm
    the little number under the elements in the periodic table.
  37. What is moles?
    moles is n
  38. What is the formula for to get mass?
    Mm (moler mass) x n (moles) = m (mass)

    Mm x n = m
  39. What symbol do you use when speaking of Moler Mass?
    g/mol (the molecule)
  40. Mass are in what measurement?
    g (grams)