9 - Physical Changes and Chemical Changes in Matter - PowerPoint PPT Presentation

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9 - Physical Changes and Chemical Changes in Matter

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Title: 9 - Physical Changes and Chemical Changes in Matter


1
Physical Chemical Changes
2
MATTER
  • Matter is anything which has mass takes up
    space
  • All matter is made of tiny particles called ATOMS

3
STATE OF MATTER
  • There are 3 states of matter solid, liquid, and
    gas

4
STATE OF MATTER
  • SOLIDS
  • Atoms held tightly together
  • Has FIXED VOLUME FIXED SHAPE

5
STATES OF MATTER(animation)
6
STATE OF MATTER
  • LIQUIDS
  • Atoms not held together as tightly
  • Has FIXED VOLUME SHAPE CHANGES according to
    container

7
STATES OF MATTER(animation)
8
STATE OF MATTER
  • GASES
  • Almost no force holding atoms together
  • VOLUME CHANGES SHAPE CHANGES according to
    container

9
STATES OF MATTER(animation)
10
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11
STATES OF MATTER(animation)
12
Properties of Compounds
13
PROPERTIES OF COMPOUNDS
  • Compounds can be classified by their
  • PHYSICAL PROPERTIES
  • Describes a compounds appearance
  • Examples color, texture, state of matter

14
PHYSICAL PROPERTIES (texture)
15
PHYSICAL PROPERTIES (colour)
16
PHYSICAL PROPERTIES (melting point)
17
PROPERTIES OF COMPOUNDS
  • Compounds can be classified by their
  • CHEMICAL PROPERTIES
  • Describes a compounds behavior when mixed with
    other things
  • Example baking soda vinegar

18
Physical Changes in Matter
19
Physical Change
  • Physical changes occur when matter changes its
    property but not its chemical nature.

20
Physical Change
  • Physical property changes could include a change
    in
  • Texture, Shape, Size
  • State of Matter
  • Dissolving

21
Physical Change
22
Chemical Changes in Matter
23
CHEMICAL CHANGE
  • Chemical changes are changes matter undergoes
    when it becomes new substance or different
    matter.
  • These changes are called chemical reactions

24
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25
CHEMICAL CHANGE
  • A chemical change occurs when fireworks are used.
    Fireworks are made of metals such as magnesium
    and copper. These change chemically as they
    light up the sky.

26
FIREWORKS
27
CHEMICAL CHANGE
  • How do
  • you know if there is a chemical change?

28
CHEMICAL CHANGE
  • Signs of a chemical change include
  • Changes in colour
  • Formation of bubbles or a solid (called
    precipitate)
  • Production of, heat, light or smoke

29
1. COLOUR CHANGE
30
2. BUBBLING
31
3. FORMATION OF A SOLID (precipitate)
32
4. ENERGY RELEASED
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