Physical Properties Of Matter

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    • The Physical Properties of Matter
  1. What is a physical property of matter?
    • A property that can be observed or measured without changing the identity of that matter
    • Ex: Color, odor, shape, size, etc.
  2. Thermal Conductivity
    • Definition:
    • The ability to transfer thermal energy (heat) to something else
    • Example:
    • Coffee in a special cup to prevent heat transfer to our hands
  3. State
    • Definition:
    • The form in which matter exists: solid, liquid, gas, or plasma
    • Example:
    • Ice = Solid
    • Water = Liquid
    • Helium = Gas
    • Lightning = Plasma
  4. Malleability
    • Definition:
    • The ability to be pounded into thin sheets
    • Example:
    • Aluminum can be pounded flat to make aluminum foil
  5. Ductility
    • Definition:
    • The ability to be drawn into thin wires
    • Example:
    • Copper is used to make wires
    • Example:
    • Alka-seltzer dissolves in water or sugar dissolves in coffee
    Solubility
    • Definition:
    • The ability for one substance to dissolve into another substance
  6. Density
    • Definition:
    • Mass per unit volume
    • Example:
    • Lead is used for fishing weights because it is more dense than water
  7. More information about density...
    • Density = The amount of matter in a given space or volume
    • Density = m Mass
    • v Volume
  8. More information about density...
    • Most substances have a unique density:
    • Water = 1.00 g/mL
    • Gold = 19.32 g/mL
    • (See page 13 in your book for a bigger list)
    • Density < 1 - The object will float in water
    • Density > 1 – The object will sink in water
  9. The Magic Triangle
    • Answers are expressed in g/cm 3
    • or g/mL
    m D V