Download Bell Ringer 3/2/09

Chapter 2 Section 2
Physical Properties
Physical Properties
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A characteristic that can be ________________
or measured without changing the __________
of the substances in a _______________
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Viscosity
________________________
Malleability
Hardness
Melting Point
Boiling Point
________________________
Viscosity
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How well a liquid resists ______________
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Honey – ___________ Viscosity
Water – ____________ Viscosity
Importance
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Motor oil in a car helps _________________
engine parts
Conductivity
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The ability to allow heat to ____________
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Conductors – A ____________ conductivity
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Insulators – A _____________ conductivity
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Metals
Wood
Which is safe in an electrical socket
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Metal or Plastic Fork?
Malleability
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The ability to be ___________________
without shattering
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Gold is Malleable
Ice Cubes are _____________ Malleable
A solid that shatters when struck is
considered __________________
Hardness
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Harder materials will ________________
softer ones
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You can scratch glass with metal because the
metal is ________________ than the glass
You CANT scratch glass with you finger nail
because the glass is _________________
____________________ is the hardest know
material
Melting & Boiling Points
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Melting Point
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Temperature at which a substance changes
from a solid to a ____________________
Boiling Point
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Temperature at which a ________________
boils
Density
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Ratio of an object’s _____________ to it’s
___________________
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Density = Mass/Volume
Used to determine ___________________
Silver has a density of 10.5
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If a coin has a density of 9.9, then it is likely _____
silver
Using Physical Changes
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Physical Properties are used to ________
a material, to ________________ a
material for a specific purpose, or to
___________________ the substances in
a mixture
Using Physical Properties
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To _________________
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Crime scenes can use it to ID a car in a hit
and run based on the paint chips
To _________________ Materials
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Nylon shoelaces work much _____________
than wooden ones
To Separate Mixtures
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____________________
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A process that separates materials based on
the size of their ___________________
____________________
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Process that separates the substances in a
solution based on their ________________
points
Separate water from salt-water
Recognizing a Physical Change
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Occurs when some of the properties of a
material change, but the substances in the
material remain the _____________
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________________, Boiling, or Melting Water
___________________ Paper
MOST can be ______________________
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Slicing Tomato
_______________________ Shirt