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The Physical Properties of
Matter
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.
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
State
Definition:
The form in which matter exists: solid, liquid, gas, or plasma
Example:
Ice = Solid Water = Liquid Helium = Gas Lightning = Plasma
Malleability
Definition:
The ability to be pounded into thin sheets
Example:
Aluminum can be pounded flat to make aluminum foil
Ductility
Definition:
The ability to be drawn into thin wires
Example:
Copper is used to make wires
Example:
Sugar dissolves in coffee
Kool Aid
Solubility
Definition:
The ability for one substance to dissolve into another substance
Density
Definition:
Mass per unit volume
Example:
Lead is used for fishing weights because it is more dense than water
More information about density...
Density = The amount of matter in a given space or volume
Density = m Mass
v Volume
More information about density...
Most substances have a unique density:
Water = 1.00 g/mL
Gold = 19.32 g/cm3
(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
The Magic Triangle
Answers are expressed in g/cm3
or g/mL