Read p. 353 of Foundations of physical
science by Tom Hsu
• Find and discuss the definition “change in physical property” Write
this definition in your own words.
• List as many physical properties as you can. Use your book, check the
index read chapter and section headings.
• As a team, define what a physical property is.
Physical Property
A physical property is one that is displayed without
any change in composition. (Intensive or Extensive)
A characteristic that describes a property that is
“owned” by a piece of matter and can be detected by
our senses without changing how the matter is
arranged
For example, you can observe the color of hair or
taste the rainbow if you eat skittles without
changing the hair or the candy.
Intensive properties: A physical property that will be the same
regardless of the amount of matter
• density: m/v
• color: The pigment or shade
• conductivity: How electricity flows through the
substance
• malleability: how much a substance can be flattened
without breaking.
• luster: how shiny the substance looks
• Hardness: Mohs scale resistance to scratching
• Elasticity: How much something can stretch and
return to it’s original shape before it breaks
• Tensile Strength: how much the matter can be pulled
before breaking
• Brittleness: Tendency to shatter
• State (solid, liquid, gas)
• Condensation / Vaporization (boiling) point
• Freezing / Melting point
• Viscosity: resistance to flow
• Miscibility: whether matter will combine to form a
solution
• Albedo: how much energy is reflected back compared
to how much energy is absorbed.
• Solubility: how much one substance can be dissolved
by another substance.
• Thermal conductivity: how heat flows through matter
• Buoyancy: related to density of a fluid-how much
push back when pushed on.
• specific heat: how much energy it takes to change the
amount of heat something can hold
• Texture: How rough or smooth something feels
• magnetism
Extensive Properties
A physical property that will change if the amount of matter changes.
• Mass: how much matter in the sample
• Weight: how gravity affects the mass
• Volume: How much space the sample takes up
• Energy: how much energy is contained within the matter
• Size and Shape
• Length, width, height: How long, high or wide the sample is
• Electrical charge: how much charge is stored within the matter.
Physical Change:
• Change in which the matter's physical properties are altered,
but composition (what it is made up of) remains unchanged.
The atomic structure of the molecules does not change.
For example:
If water is cooled or heated the density changes but it’s still water
When energy is changed it can change the state of matter (liquid solid
or gas) but it still is the same kind of matter.
When hair is cut or dyed the length or color changes but it is still hair
When water, lemon and sugar are mixed together it makes lemonade
but the water is still H2O and the sugar is still C12H22O11 and the lemon
is still lemon.
Chemical Property:
Any characteristic that gives a sample of matter the
ability/inability to undergo a change that alters its
composition.
Examples:
Reactivity: How chemically stable matter is - Alkali metals react with water.
Flammability: How matter reacts to heat - Paper's ability to burn.
Acidity / Alkalinity: How acidic or basic something is
Corrosion: degradation of a material due to a reaction with its environment – batteries can corrode due to the reaction
between two dissimilar metals.
Oxidation: How matter reacts to oxygen is a specific type of corrosion - Iron reacts with oxygen to form rust, apple turns
brown, penny turns green
Catalysis: ability to increase reaction rate Heat of combustion: How much heat is released during burning
Toxicity: how poisonous something is to life.
Chemical Change:
Change in which one or more kinds of matter are transformed to new
kinds of matter with altered compositions (Chemical Reaction).
Research : Is pH a physical or chemical property? What about smell?
Question If physical is pH or smell intensive or extensive?
Take a stand, state why, cite sources
Milk turns sour. This is a _______________
Chemical Change
Physical Change
Chemical Property
Physical Property
None of the above
ab
ov
e
of
th
e
No
ne
Pr
op
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Ph
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0% 0% 0% 0% 0%
Ch
em
ic a
lC
A.
B.
C.
D.
E.
HCl being a strong acid is a __________,
Wood sawed in two is ___________
Chemical Change, Physical Change
Physical Change, Chemical Change
Chemical Property, Physical Change
Physical Property, Chemical Change
None of the above
hy
Pr
si c
op
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ty
..
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30
Ph
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P
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0% 0% 0% 0% 0%
Ch
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A.
B.
C.
D.
E.
CuSO4 is dissolved in water
30
ab
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of
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No
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Pr
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Chemical Change
Physical Change
Chemical Property
Physical Property
None of the above
Ch
em
ic a
lC
A.
B.
C.
D.
E.
Aluminum Phosphate has a density of 2.566
g/cm3
30
Chemical Change
Physical Change
Chemical Property
Physical Property
None of the above
ab
ov
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of
th
e
No
ne
Pr
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Ph
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0% 0% 0% 0% 0%
Ch
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A.
B.
C.
D.
E.
30
Which of the following are examples of
matter?
A Dog
Carbon Dioxide
Ice Cubes
copper (II) nitrate
All of the above
ab
ov
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of
th
e
Al
l
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co
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)
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0% 0% 0% 0% 0%
A
A.
B.
C.
D.
E.
The mass of lead is a (an) ______
_______property
ch
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Ex
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0%
Ch
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ph
ys
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Ex
tr
in
sic
ph
ys
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30
0%
In
tr
in
sic
Intrinsic physical
Extrinsic physical
Intrinsic Chemical
Extrinsic chemical
In
tr
in
sic
A.
B.
C.
D.
Is sunlight matter?
A. True
B. False
30
0%
Fa
lse
Tr
ue
0%
30
Bread rising is a physical property
A. True
B. False
0%
Fa
lse
Tr
ue
0%
Dicing potatoes is a physical change
A. True
B. False
30
0%
Fa
lse
Tr
ue
0%
The formation of gas bubbles is a sign of what
type of change?
30
0%
0%
No
ne
0%
Bo
th
0%
Ch
em
ic a
l
Physical
Chemical
Both
None
Ph
ys
ica
l
A.
B.
C.
D.