Chem133 Chapter1

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Chem133 Chapter1
2013-10-08 19:52:45
Chem chemistry 133 chem133 foust

Chemistry chem chem133
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  1. What is Matter?
    Anything with mass and volume.
  2. Define Composition.
    The types and amounts of simpler substances that make it up
  3. What are physical properties?
    Characteristics a substance shows by itself, without changing into or interacting with another substance.
  4. Melting point, electrical conductivity, and density are examples of what type of property?
    Physical properties.
  5. Define physical change.
    When a substance alters its physical properties, not its composition.
  6. What are chemical properties?
    Characteristics a substance shows as it changes into or interacts with another substance.
  7. Flammability, corrosiveness, and reactivity with acids are examples of what type of property?
    Chemical Properties
  8. Define Chemical change (also called Chemical reaction.)
    When a substance is converted into a different substance.
  9. Herp da derp, What are the three physical states? Define them.
    • Solid
    • Fixed  shape that does not conform to the container shape. 
    • Liquid
    • Varying shape that conforms to container shape, but only to the extent of the liquid's volume; has an upper surface.
    • Gas
    • Has a varying shape that conforms to the container, but fills the container, without any surfaces.
  10. Define the atomic scale states of matter (IE relative position of particles.)
    • Solid
    • The particles lie close to each other in a regular, three-dimensional array
    • Liquid
    • Particles lie close to each other, but move randomly around each other.
    • Gas
    • Particles have large distances between them and move randomly throughout the container.
  11. What is a general theme of chemistry?
    Macroscopic-scale properties and behavior, those we can see, are results of atomic-scale properties and behavior we can't see.
  12. Define energy.
    Le ability to do le work

    • Kinetic: 
    • Energy in motion

    • Potential:
    • Energy of position
  13. What are the steps of the scientific method?
    • Observations- data, often summarized in mathematical terms, as natural law.
    • Hypothesis- proposal to explain an observation.
    • Experiment- procedure to test a hypothesis.
    • Model- Simplified, not exact, representation of some aspect of nature we use to predict related phenomena.
  14. What are the SI Units for:
    Electric Current
    Amount of substance
    Luminous intensity
    • Mass- Kilogram (kg)
    • Length- meter(m)
    • Time- second(s)
    • Temperature- Kelvin(K) [no degree sign]
    • Electric Current- Ampere(A)
    • Amount- Mole(mol)
    • Luminous intensity- Candela(cd)
    • Volume- cubic meter(m3) [chemists use Liter(L) and milliliter (mL)]
  15. What is an angstrom?
    • An old unit still sometimes used:
    • 1Å= 10-10 m = .1nm = 100pm
  16. What is the difference between temperature and heat?
    • Temperature (T): measure of how hot or cold one object is relative to another.
    • Heat: the energy that flows from the object with the higher temperature to the object with a lower temperature.
  17. Convert from Kelvin to Celsius and vice versa.
    0K = -273.15°C

    0°C = 273.15K
  18. Convert from Celsius to Fahrenheit. 
  19. Convert from Fahrenheit to Celsius.