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Physical and Chemical Properties and Changes

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Title: Physical and Chemical Changes and Properties Author: Georgeann Wright Last modified by: BLANCHETTE, LINDA 1 Created Date: 10/12/2005 2:28:51 AM – PowerPoint PPT presentation

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Title: Physical and Chemical Properties and Changes


1
Physical and Chemical Properties and Changes
2
Untamed Video 2.0
  • Answer questions in Cornell Notes
  • What type of change occurs when the tires are
    shredded to be used in new products?
  • How do you know that treating tires with
    microwaves causes a chemical change?

3
Mapping it out!
  • What are some characteristics of physical
    changes?
  • Does the identity of a substance change with a
    physical change?
  • How does a chemical change affect the identity of
    a substance?
  • Create a Thinking Map or Concept Map regarding
    Physical and Chemical Properties and Changes?

4
Carouselling
  • Procedure
  • The student will work with a partner/group to
    answer questions on chart paper that is placed
    around the room. Each group responds to the
    material assigned and then rotates around the
    next chart paper to respond using their
    designated group color. The group can add more
    information and/or question another groups
    response by drawing a question mark next to the
    information in question.

5
Vocabulary To Know
  • Chemical change
  • Chemical property
  • Conservation of mass
  • Physical change
  • Physical property

6
Property
If struck by lighting, the tree could catch FIRE
(BURN)
  • Is a description of an object

The tree is GREEN
The tree is TALL
7
Physical Properties
five
  • Are observed by the use of the and can
    be determined without destroying the object.
  • Ex. color

senses
8
Examples of Physical Properties
Color
Smell
Taste
Hardness
State of Matter
Boiling, Freezing, or Melting Point
9
Examples of Physical Properties
Density
Mass
Volume
Malleability (the ability to be molded)
Solubility (the ability to be dissolved)
10
Chemical Properties
  • Are determined by a substances ability to
    with other substances.
  • Original substance is changed in observing a
    chemical property.
  • Ex. Iron rusting

react
11
Examples of Chemical Properties
  • The ability to react with
  • -
  • -
  • -
  • -
  • The ability to react with
  • The ability to catch fire ( )

air
rust
tarnish
corrode
rot
water/acids
flammability
12
Physical or Chemical Property?
  • Ability of gun powder and fire to explode.

Chemical Property
13
Physical or Chemical Property?
  • The color of a sunset.

Physical Property
14
Physical or Chemical Property?
  • The ability of a nail to rust.

Chemical Property
15
Physical or Chemical Property?
  • The shape of a leaf.

Physical Property
16
Physical or Chemical Property?
  • The ability of wood to burn.

Chemical Property
17
Physical or Chemical Property?
  • The hardness of a diamond.

Physical Property
18
Physical or Chemical Property?
  • The volume of your coke.

Physical Property
19
Physical or Chemical Property?
  • The mass of two camels.

Physical Property
20
Physical Changes
  • In a physical change, the original substance
    still exists, it has only changed form
  • ____ new substances are formed.

No
21
Examples of Physical Changes
  • Change in size, shape, or color
  • Pencil shavings
  • Torn Paper
  • Crushed ice
  • Sugar dissolved in water
  • Painting a wall

22
Chemical Changes
  • a change that occurs that the of a
    substance to change something is formed.

causes
identity
new
23
Evidence of Chemical Change
color
  • New ________appears
  • Bubbbles or ________
  • Precipitate forms (____ material)
  • _____ is produced
  • ______ is produced
  • ______ is given off

Heat
fizzing
Light
Sound
solid
reverse
  • Difficult or impossible to __________

24
Other Examples
  • Wood burning
  • Metal rusting
  • Food digesting
  • Gasoline burning
  • Cake baking

25
Physical or Chemical Change?
  • Water evaporates from the ocean.

26
Physical or Chemical Change?
  • The yolk of an egg, which contains sulfur, causes
    tarnish to form on silver.

27
Physical or Chemical Change?
  • The ice on a lake melts to become water in the
    lake.

28
Physical or Chemical Change?
  • Charcoal in a fire turns to ash after several
    hours.

29
Physical or Chemical Change?
  • A pencil is sharpened in a pencil sharpener,
    leaving behind shavings.

30
Physical or Chemical Change?
  • A battery makes electricity to turn on a
    flashlight.

31
Physical or Chemical Change?
  • A bicycle rusts when left in the rain.

32
Physical or Chemical Change?
  • A shirt is accidentally torn in the washing
    machine.

33
Physical or Chemical Change?
  • A log is split in two by an axe.

34
Physical or Chemical?
  • Write down your answers on the Exit Ticket.

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