Pg 156-157

1
Pg 156-157

• 1. Define and give one example of
• Heterogeneous
• Homogeneous
• Solution
• Mechanical Mixture
• Copy figure 5.1 and 5.2 into your notebook.

2
Diagram 5.1States of Matter
GAS
LIQUID
SOLID
3
MATTER
MIXTURES
PURE SUBSTANCES
MECHANICAL MIXTURES
SOLUTIONS
HOMOGENEOUS
HETEROGENOUS
MATTER
4
Distribution of Material

• The distribution of materials can be either
  heterogeneous or homogeneous.

5
Types of mixtures

• Mixtures can be classified into five types
• 1 Mechanical Mixture occurs when the particles
  of matter are not uniformly scattered.
• Examples relish, concrete, sand, salads

6

• 2 Suspension have larger particles and are
  heterogeneous. Most mixtures are suspension
  mixtures.
• Examples Dust in air, oil and water

7

• 3 Solution solutions are homogeneous mixtures
  that consist of microscopic particles. The
  solute and the solvent in a solution are either
  both polar or non-polar molecules.
• Examples sugar water, salt water, fizzy drinks

8

• 4 Colloidal these mixtures fall between
  suspension and solution mixtures. These mixtures
  have properties of both solids and liquids. The
  substances within the mixture are smaller and
  homogeneous.
• Examples whipped cream (a gas and a liquid)
  paints, glue, butter and milk.

9

• 5 Alloys are homogeneous mixtures that contain
  one or more metals.
• Examples stainless steel, sterling silver

10
Questions

• 1. Define solute and solvent. Pg 170
• 2. Identify the following as one of the types of
  mixtures. Include an explanation why.
• Raisin Bran cereal, paint thinner, paint,
  shaving cream, oil and vinegar salad dressing,
  14K gold
• 3.Your teacher has given you 2 shaken test tubes,
  one with milk and one with chalk and water. How
  do you decide which is which? Explain.