GChem

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Author:
DRRupert
ID:
21608
Filename:
GChem
Updated:
2010-06-01 18:34:37
Tags:
Chem
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Description:
Chemistry
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  1. The ______ of matter relates to the kinds of elements it contains.
    Composition
  2. What are the 3 states of matter
    • 1. Gas
    • 2. Liquid
    • 3. Solid
  3. What state of matter has no shape & no volume?
    Gas
  4. What state of matter has definit volume & takesthe shape of its container?
    Liquid
  5. What state of matter has definit volume & shape?
    Solid
  6. The name of the chemicals in a reaction
    System
  7. What is the name for everything that is not the system
    surroundings
  8. Any charecteristic that gives a sample of matter it's unique I.D
    Propererty
  9. Enity composed of 2 or more atoms attached to one another in a specific way
    Molecules
  10. What is physical material of the universe, it is anything that occupies space.
    Matter
  11. What is matter that has distinct properties and a composition that does not vary from sample to sample
    • Pure Substance
    • Examples: Water & Table salt
  12. What cannot be decomposed into a simpler a simpler substance
    Elements
  13. Substance composed of two or more elements they contain two or more kinds of atoms
    compounds
  14. What law observes that the elemental composition of a pure compound is always the same
    Law of Constant Composition or Law of Definite Proportions
  15. What is a combination of different substances where each substance retains its own chemical idenity and properties.
    The composition can vary.
    Mixture
  16. What are the substances called that make up a mixture?
    Components
  17. What is a mixture called that doesn't have the same composition, properties, & apperance throughout?
    Heterogeneous mixture
  18. What is a mixture called that is uniform throughout?
    Homogeneous
  19. What is another name for a Homogeneous mixture?
    Solutions
  20. What are the two different type of properties?
    • 1. Physical
    • 2. Chemical
  21. What properity can be observed without changing the identity and composition of the substance?
    Physical Properties
  22. What do Physical Properties observe?
    • Color
    • Odor
    • Density
    • Melting point
    • Hardness
  23. What property describes the way a substance may change, or react, to form other substances?
    Chemical properties
  24. What is a common chemical property?
    Flammability
  25. What property does not depend on the amount of the sample being examined?
    Useful to I.D substances
    Intensive
  26. What are some of the intensive properties?
    • temperature
    • melting point
    • Density
  27. What properity depends on the quantity of a substance?
    Extensive Properties
  28. What is an example of extensive properties?
    • mass
    • volume
  29. What type of change does a substance changes its physical apperance but not its composition?
    Same substance before and after the change.
    Physical change
  30. What change includes all changes of state?
    L->G, L->S
    Physical
  31. What type of change happens when a substance is transformed into a chemically different substance?
    Chemical change or chemical reaction
  32. What are 3 ways of separating a mixture?
    • Filtration
    • Distillation
    • Chromatography
  33. SI unit for mass
    kg
  34. SI unit for length
    Meter - m
  35. SI unit for time
    Second s^a
  36. SI unit for temp
    Kelvin - K
  37. SI unit for Amount of substance
    Mole - mol
  38. SI unit for electric current
    Ampere - A
  39. Giga
    • abb. Meaning Ex.
    • G 10^9 1 x 10^9
  40. Mega
    • Abb. Meaning Ex.
    • M 10^6 1 x 10^6
  41. Kilo
    • Abb. Meaning Ex.
    • k 10^3 1 X 10^3
  42. Deci
    • Abb. Meaning Ex.
    • d 10^-1 0.1
  43. Centi
    • Abb. Meaning Ex.
    • c 10^-2 0.01
  44. Milli
    • Abb. Meaning Ex
    • m 10^-3 0.001
  45. Micro
    • Abb. Meaning Ex.
    • u^a 10^-6 1 x 10^-6
  46. Nano
    • Abb. Meaning ex.
    • n 10^-9 1 x 10^-9
  47. Pico
    • Abb. Meaning Ex.
    • p 10^-12 1 x 10^-9
  48. femto
    • Abb. Meaning Ex.
    • f 10^-15 1 x 10^-15
  49. Kelvin conversion for Celsius
    K = C + 273.15
  50. Celsius to Fahrenheit
    C = 5/9 (F - 32)
  51. Fahrenheit to Celsius
    F = 9 / 5 (C) +32
  52. Volume of a cube is given in what
    • length cubed
    • cubic meter m^3
  53. What is defined as the amount of mass in a unit volume of the substance
    Density

    D= Mass / Volume

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