Objectives

1
Objectives

• SWBAT differentiate between classifications of
  matter.
• SWBAT describe and choose appropriate separation
  techniques.

2
Substance vs Mixture

• Classify the following as a substance or mixture.
• Chlorine
• Water
• Soil
• Sugar water
• Oxygen
• Carbon dioxide
• Rocky road ice cream
• Alcohol
• Pure air
• iron

3
Gas assumes the shape and volume of its
container particles can move past one
another compressible -lots of free space
between particles flows easily particles can
move past one another
Liquid assumes the shape of the part of the
container which it occupies particles can
move/slide past one another not easily
compressible little free space between particles
flows easily particles can move/slide past one
another
Solid retains a fixed volume and shape rigid -
particles locked into place not easily
compressible little free space between particles
does not flow easily rigid - particles cannot
move/slide past one another
4

• Draw a diagram of
• a solid and gas in a closed flask,
• a liquid and solid in a closed flask,
• a solid, liquid and gas together in a closed
  flask.

5
Classification of Matter

• Next, you will complete a Classification of
  Matter graphic organizer.

6
Matter
Has mass and Takes up space
Can only be Separated Chemically, uniform and
definite composition
Can be separated Physically, not
definite composition
cannot be Separated into Simpler substance
Contains two Or more elements
Uniform throughout
Not uniform throughout
7
States of Matter
Deposition
8
Physical Separations

• Predict how to separate each of the following
  heterogeneous mixtures
• Salt and pepper
• Sand and iron filings
• Mud (dirt from the water)
• Fruit salad (the different types of fruit)

9
Physical Separations (contd)

• Filtration
• Evaporation
• Centrifugation
• Crystallization
• Distillation
• Chromatography
• Decantation

10
Distillation
11
Chemical Separations

• Electrolysis
• Chemical Reactions
• Decomposition

12
Electrolysis