Physical Property
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Transcript Physical Property
PHYSICAL PROPERTY
characteristics of matter that can be observed
WITHOUT changing the nature (make-up) of the
substance
PHYSICAL PROPERTIES
Density
Color
Conductivity
Mass
Malleability
Ductility
Viscosity
PHYSICAL PROPERTIES: COPPER
What are some physical properties of the copper
strip?
How can we physically change the copper strip?
CHEMICALPROPERTY
characteristics of matter that can be observed
only when there is a change in the composition of
a substance.
CHEMICAL PROPERTIES: COPPER
What do you notice about the second copper
strip?
Is it still copper?
Yes and no!
It is copper that has reacted with weak acids
and is now covered with copper chloride and
copper sulfate
Reactivity with an acid is a CHEMICAL
PROPERTY.
In order to witness copper’s REACTIVITY
WITH AN ACID, the chemical makeup of
the copper had to be changed.
No longer just a copper sheet!
DENSITY
the amount of matter (mass) in a given unit
volume.
VISCOSITY
Viscosity refers to the resistance to flow of a fluid
(“thickness”)
VISCOSITY VS. DENSITY?!
I have oil and water…
How can I determine which is denser?
Does this mean that the water is also more
viscous?
Let’s have a race!
Two volunteers, 20 mL of each liquid, a funnel and a
flask will be needed to complete this race.
What is the difference between viscosity and
density?
CHEMICAL CHANGE:
the change of one or more substances
into other substances.
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DRAW:
CHEMICAL PROPERTY:
a property that can be observed only
when there is a change in the
composition of a substance.
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DEFINE (IN YOUR OWN WORDS):
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DRAW:
CHEMICAL REACTION:
another term for chemical change.
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COMPOUND:
a chemical combination of two or more
different elements joined together in a
fixed proportion.
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DENSITY:
the amount of matter (mass) in a given
unit volume.
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ELEMENT:
a substance that cannot be broken down
into simpler substances.
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MASS:
the measure of the amount of matter an
object contains.
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DEFINE (IN YOUR OWN WORDS):
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MATTER:
anything that takes up space and has
mass.
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DEFINE (IN YOUR OWN WORDS):
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MIXTURE:
a combination of two or more substances
in which the basic identity of each
substance is not changed.
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DEFINE (IN YOUR OWN WORDS):
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DRAW:
PHYSICAL CHANGE:
a change in matter where its identity
does not change.
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DEFINE (IN YOUR OWN WORDS):
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PHYSICAL PROPERTY:
a characteristic of matter that is
exhibited without a change of identity.
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DEFINE (IN YOUR OWN WORDS):
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PROPERTY:
the characteristics of matter; how it
behaves.
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DRAW:
SOLUTION:
a mixture that is the same throughout,
or homogeneous.
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VOLATILE:
description of a substance that easily
changes to a gas at room temperature.
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VISCOSITY:
the resistance of a liquid to flow
(viscous).
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BUOYANCY:
The tendency or capacity to remain
afloat in A liquid or rise in air or gas; the
upward force that A fluid exerts on an
object less dense than itself.
1 2 3 4
DEFINE (IN YOUR OWN WORDS):
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DRAW:
Students in a chemistry lab
measure the time it takes four
different 100 mL solutions to
pass through a hole in the
bottom of a cup. Which of the
following properties of the
solutions is most likely being
measured? (Apr'06 10th -22)
A.
B.
C.
D.
Buoyancy
Mass
Viscosity
Volume
ANS: C
The picture shows the results of
pouring a blue liquid into a
clear liquid and allowing the
mixture to settle for 25 minutes.
Compared to the clear liquid,
the blue liquid is more _____.
(Apr'06 11th -1)
A.
B.
C.
D.
massive
dense
viscous
soluble
ANS: B
Today, the observation that an
air bubble in water rises to the
surface is explained by the
principle of _____. (Fall'05 11th 19)
A.
B.
C.
D.
viscosity
buoyancy
interference
polarity
ANS: B
Brown sugar consists of crystals
of white sugar coated with
molasses. If brown sugar
hardens, it can be softened by
heating. The most likely reason
brown sugar softens when
heated is that heat _____.
(Fall'05 11th -25)
A.
B.
C.
D.
increases the moisture of sugar
decreases the volume of molasses
increases the density of sugar
decreases the viscosity of molasses
ANS: D
As the viscosity of a liquid
increases, the liquid _____.
(Feb'06 11th -25 and Jul'06 11th 38)
A.
B.
C.
D.
conducts electricity
pours more slowly
evaporates more quickly
forms a precipitate
ANS: B
Swimmers find that they can float
more easily in the ocean than in a
freshwater pond. The most likely
reason for this phenomenon is
that the _____.
A. viscosity of pond water is greater
than that of ocean water
B. density of ocean water is higher than
that of pond water
C. temperature of pond water is lower
than that of ocean water
D. mass of ocean water is greater than
that of pond water
ANS: B
The buoyant force that a fluid
exerts on objects is increased
when there is an increase in the
fluid’s _____. (Jul'06 11th -25)
A. acidity
B. clarity
C. solubility
D. density
ANS: D
According to this information,
Block Z is most likely composed
of _____.
A.
B.
C.
D.
balsa
ebony
maple
poplar
ANS: A
A bar of soap produced by this
soap-making process normally
sinks to the bottom of a container of
water. Which of these processes
could cause the bar of soap to float
in water? (Oct'05 11th -43)
A. Making grooves in the surface of the thick
paste
B. Adding air bubbles to the thick paste
C. Letting the thick paste sit for four days
D. Chilling the mold filled with the thick
paste
ANS: B