Chem Midterm Review

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Anonymous
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60851
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Chem Midterm Review
Updated:
2011-01-19 21:49:16
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Chem Midterm
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  1. (state of matter)
    high pressure, dense, vibrate
    Solid
  2. (state of matter)
    indefinite shape, definite volume
    Liquid
  3. (state of matter)
    low pressure
    Gas
  4. (state of matter)
    high temp, far apart particles
    Gas
  5. (state of matter)
    charged particles mixed with gas phase, extreme temps
  6. Property that can be observed without altering the substance
    Physical property
  7. Property that describes the substance's ability to undergo a change cannot be observed without altering the substance
    Chemical property
  8. A change that does not alter chemical identity, usually reversable
    Physical change
  9. A change in which a new substance with new chemical properties is formed
    Chemical change
  10. (mixture)
    uniform composition, will not settle out
    Homogeneous
  11. (mixture)
    variable composition, can settle out, differences detected with a microscope
    Heterogeneous
  12. every sample has the same properties and same exact composition, cannot be seperated by physical means
    Pure substances
  13. (Law)
    energy cannot be created or destroyed during any chemical or physical change
    Law of conservation of energy
  14. energy absorbed by the system
    Endothermic
  15. Energy released into the surroundings
    Exothermic
  16. Giga (G)
    109
  17. Mega (M)
    106
  18. Kilo (k)
    103
  19. Hecto (h)
    102
  20. Deka (da)
    101
  21. Deci (d)
    10-1
  22. Centi (c)
    10-2
  23. Milli (m)
    10-3
  24. Micro (u)
    10-6
  25. Nano (n)
    10-9
  26. Pico (p)
    10-12
  27. A measure of the amount of matter in an object
    Mass
  28. A measure of the gravitational force on an object
    Weight
  29. A combination of 2 or more units
    Derived unit
  30. The amount of space and object occupies
    Volume
  31. The closeness of the measurement to a theoretical or known value
    Accuracy
  32. Calculation related to accuracy
    % error
  33. Instrument precision,
    the repeatability of a data set or the closeness or a measurement to the average
    Precision
  34. Calculation related to precision
    Average deviation
  35. Specific substances always contain the same elements in the same ratio by mass
    Law of definite proportions
  36. When multiple compounds of the same 2 elements exist, the masses of the second element combined with a certain mass of the first is always a ratio of small whole numbers
    Law of multiple proportions
  37. (experiment)
    Cathode Ray Tube
    J. J. Thomson
  38. (experiment)
    Millikan Oil Drop Experiment
    Robery Millikan
  39. (experiment)
    Gold Goil Experiment
    Rutherford
  40. Planetary atomic model
    Rutherford & Bohr
  41. Atomas of the same element that have different numbers of neutrons
    Isotopes
  42. The mass in grams of one mole of a pure substance
    Molar mass

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