Properties of Matter
Properties of Matter
• 
Properties of Matter – set of
characteristic by which a substance
is recognized.
• 
Extensive Properties – properties that vary
with the size of a sample
– 
• 
Ex. Mass, Volume, Length…….
Intensive Properties – properties that are
not dependant on the size of the sample
– 
Ex. density, melting point, boiling point, chemical
reactivity
• 
• 
• 
Physical Properties – properties that can be observed
without chemically changing the substance
–  ex. color, taste, hardness, melting pt. etc.
Chemical Properties – properties that describe how a
substance interacts with other substances
–  ex. rusting, combustibility, reactions w/ other
substances …
*All chemical properties are intensive. Physical
properties can be intensive or extensive
• 
Density – Quantity of mass occupying a unit of
volume
– 
It is a ratio of mass to volume.
•  D = M/V
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– 
Density is an intensive physical property
It can be affected by temperature and pressure.
How?
» 
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