445717231-Properties-of-Matter-----ppt.ppt

ppt

1. Properties of MatterProperties of Matter
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2. Matter has Observable PropertiesMatter has Observable Properties

Physical PropertyPhysical Property: A characteristic of a : A characteristic of a
substance that can be observed without substance that can be observed without
changing the identity of the substance.changing the identity of the substance.

SizeSize

TextureTexture

ColorColor

ShapeShape

MassMass

VolumeVolume
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3. Matter has Observable PropertiesMatter has Observable Properties

Physical Change: Physical Change:

A change in any A change in any
physical property of physical property of
a substance, not in a substance, not in
the substance itself.the substance itself.

Stretching a rubber Stretching a rubber
band is a band is a physical physical
changechange because the because the
size changes size changes
however, the however, the
material that makes material that makes
up the rubber band up the rubber band
does not changedoes not change
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4. Physical PropertiesPhysical Properties

DensityDensityThe amount The amount
of matter in a given of matter in a given
volume.volume.

D=m/v(mass/D=m/v(mass/
volume) volume)

Ice cubes float in Ice cubes float in
water because they water because they
are less dense than are less dense than
liquid waterliquid water
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5. Calculating DensityCalculating Density
Density= Mass/VolumeDensity= Mass/Volume

A marble has a volume of 5 cmA marble has a volume of 5 cm
3 3
and a and a
mass of 15 g. What is the density of the mass of 15 g. What is the density of the
marble?marble?

I: m=15 g, V= 5 cmI: m=15 g, V= 5 cm
3 3

F: D=M/VF: D=M/V

S:D=15g/ 5 cmS:D=15g/ 5 cm
3 3

M: D= 3M: D= 3

U: 3g/cmU: 3g/cm
3 3

6. Physical PropertiesPhysical Properties

Ductility Ductility The ability to be pulled into a thin The ability to be pulled into a thin
strandstrand

Wire, Paper clip, Copper wireWire, Paper clip, Copper wire
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7. Physical PropertiesPhysical Properties

Malleability: Malleability: The ability to be pressed or The ability to be pressed or
pounded into a thin sheetpounded into a thin sheet

Tin foilTin foil
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8. Physical PropertiesPhysical Properties

Boiling Point:Boiling Point: The The
temperature at temperature at
which a substance which a substance
changes from a changes from a
liquid to a gasliquid to a gas

Water to steamWater to steam
www.elmhurst.edu/~chm/vchembook/163boilingpt.html

9. Physical PropertiesPhysical Properties

Melting point:Melting point: The The
temperature at temperature at
which a substance which a substance
changes from a solid changes from a solid
to a liquidto a liquid

Ice cube melts to a Ice cube melts to a
puddle of waterpuddle of water
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10. Physical PropertiesPhysical Properties

Electrical Electrical
conductivity:conductivity: How How
well a substance well a substance
allows electricity to allows electricity to
flow through itflow through it

Water conducts Water conducts
electricity so never electricity so never
swim during a swim during a
lightning storm lightning storm
genchem.chem.wisc.edu

11. Physical PropetiesPhysical Propeties

Solubility:Solubility: The The
ability to dissolve in ability to dissolve in
another substance another substance

Adding sugar to Adding sugar to
coffeecoffee
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12. Chemical Properties of MatterChemical Properties of Matter

Chemical Properties:Chemical Properties: Describe how Describe how
substances can form new substancessubstances can form new substances

Chemical properties can be identified by Chemical properties can be identified by
the changes that they producethe changes that they produce

Chemical Change:Chemical Change: The change of one The change of one
substance into another substancesubstance into another substance

13. Signs of a Chemical ChangeSigns of a Chemical Change

Production of an Production of an
odorodor

Eggs rotting produce Eggs rotting produce
a sulfur smella sulfur smell

Lightning produces a Lightning produces a
fresh and clean smell fresh and clean smell
due to its reaction due to its reaction
with Oxygen in the with Oxygen in the
atmosphereatmosphere
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14. Signs of a Chemical ChangeSigns of a Chemical Change

Change in Change in
TemperatureTemperature

Exothermic ReactionExothermic Reaction: :
Energy is released and Energy is released and
surrounding area of surrounding area of
reaction increases reaction increases
temperature (Rusting)temperature (Rusting)

Endothermic ReactionEndothermic Reaction: :
Energy is absorbed and Energy is absorbed and
surrounding area of surrounding area of
reaction decreases in reaction decreases in
temperature (antacid and temperature (antacid and
water)water)
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www.webergallery.com/Rusting%20Away-CT.htm

15. Signs of a Chemical ChangeSigns of a Chemical Change

Change in ColorChange in Color

Fruit ripening Fruit ripening
(green tomatoes (green tomatoes
to red tomatoes)to red tomatoes)

RustRust
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16. Signs of a Chemical ChangeSigns of a Chemical Change

Formation of Formation of
BubblesBubbles

Vinegar and Vinegar and
baking sodabaking soda

Antacid and waterAntacid and water
eco-centric.blogspot.com

17. Signs of a Chemical ChangeSigns of a Chemical Change

Formation of a Formation of a
Solid or Solid or
Precipitate:Precipitate:

The shells of clams The shells of clams
and mussels are and mussels are
precipitates from a precipitates from a
chemical change of chemical change of
substances from the substances from the
animal and sea wateranimal and sea water
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