Matter

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Matter

• 4th Grade Science

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4.12.1 Select an object according to its
observable physical properties.

• Scientists use properties to describe, compare
  and classify substances.
• These properties include
• Density
• Hardness
• Color
• Texture
• If it is attracted to a magnet
• Does it dissolve in water

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4.12.1 Select an object according to its
observable physical properties.

• What is matter?
• http//www.nyu.edu/pages/mathmol/textbook/whatisma
  tter.html

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4.12.2 Identify states of matter.

• Objects that take up space and have mass are
  called matter.

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4.12.2 Identify states of matter.

• The 3 main states of matter are
• SOLID
• LIQUID
• GAS

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4.12.2 Identify states of matter.

• Matter changes from one state to another when it
  is heated or cooled.
• Examples ice, water, water vapor
• Lets take a closer look at the states of matter
• http//www.nyu.edu/pages/mathmol/textbook/statesof
  matter.html

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4.12.2 Identify states of matter.

• SOLIDS are made up of particles that are close
  together and cannot move freely.
• They keep their shape because their particles do
  not move.
• When a solid is heated it can become a liquid.
• Example ice

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4.12.2 Identify states of matter.

• LIQUIDS are made of matter that can move past one
  another.
• They do not hold their shape.
• Their particles do move around.
• Liquids take the shape of their container.
• When heated, a liquid can become a gas.
• When cooled, a liquid can become a solid.
• Example water

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4.12.2 Identify states of matter.

• GASES are made of particles that freely move
  around in all directions.
• They do not hold a shape.
• Their particles move quickly freely.
• When heated, a liquid can change into a gas.
• When cooled, some gases can become solids.
• Example water vapor

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4.12.3 Determine how various types of matter
change state.

• Water freezes when it reaches 32 degrees
  Fahrenheit. (or 0 degrees Celsius)
• Water boils when it reached 212 degrees
  Fahrenheit. (or 100 degrees Celsius)

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4.12.3 Determine how various types of matter
change state.

• Lets take a look at what happens to matter as it
  changes state
• http//www.bgfl.org/bgfl/custom/resources_ftp/clie
  nt_ftp/ks3/science/changing_matter/index.htm
• http//www.miamisci.org/af/sln/phases/watergas.htm
  l

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4.13.1 Choose features associated with physical
changes

• Physical changes happen when the appearance or
  form of matter changes.
• Physical changes include
• Folding
• Cutting
• Bending
• Chopping
• Slicing
• Sculpting
• Carving

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4.13.2 Identify characteristics of different
types of mixtures.

• MIXTURES are combinations of two or more
  substances.
• In some mixtures, you can see all the different
  parts (a salad)
• A SOLUTION is a mixture where the substances are
  mixed together so well that you can not see all
  the different parts. (kool aid)

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4.13.3 Determine methods for separating
mixtures.

• There are many ways to separate the different
  parts of mixtures
• Your hand
• A strainer
• Filtering
• Evaporation
• Using a magnet

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4.13.3 Determine methods for separating
mixtures.

• Lets visit the MIXTURES LAB
• http//www.harcourtschool.com/activity/mixture/mix
  ture.html

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4.13.3 Determine methods for separating
mixtures.

• Some substances DO NOT mix. Lets do a Science
  Experiment to find out
• http//www.spartechsoftware.com/reeko/Experiments/
  mixupa.htm