Mixtures and Pure Substances

1
Mixtures and Pure Substances
2

• Matter is any
• material that
• takes up space
• and has mass.

3
Wheres the matter?
4

• Matter can be solid, liquid, or gas.

5
Properties describe the characteristics of
matter. Every material has its own set of
properties.
6
Properties

• Colour
• Odour
• Taste
• Feel
• Density
• Boiling Point
• Melting Point

7

• Some properties of water?
• It is colourless
• It is tasteless
• It is odourless
• It exists in three states solid, liquid, gas.
• It has a high specific heat capacity.
• It freezes at 0 degrees Celsius.
• It boils at 100 degrees Celsius.
• ONE SET OF PROPERTIES!

8
Properties of Chocolate Chip Cookie?
What taste?
What melting point?
What colour?
Two sets of properties!
9

• Homogeneous matter
• is described using one set
• of properties.

• Heterogeneous matter
• is described using more than one set of
  properties.

10
Homogeneous or Heterogeneous?
11
Homogeneous or Heterogeneous?
12
Homogeneous or Heterogeneous?
13
Homogeneous or Heterogeneous?
14
Homogeneous or Heterogeneous?
15
Homogeneous or Heterogeneous?
16
Homogeneous or Heterogeneous?
17
Homogeneous or Heterogeneous?
18
Summary