Matter: anything that has mass and volume

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Reviewing MATTER

• Matter anything that has mass and volume
• Mass the amount of matter in something
• Volume the amount of space something occupies

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Matter can be classified

• Element- substance with only one type of atom
• Compound- substance with two or more elements
  chemically bonded together.

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When a compound forms, its properties are
different from the original elements
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What is a property?

• Property a characteristic of a substance that
  can be observed
• It can be a physical or chemical property.

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Physical Property
- A property that can be observed and measured
without changing the materials composition.
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• EXTENSIVE Physical Property
• Extensive - Properties that depend on the amount
  of matter present.
• Mass - A measurement of the amount of matter in
  a object (grams).
• Weight - A measurement of the gravitational
  force of attraction of the Earth acting on an
  object.
• Volume - A measurement of the amount of space a
  substance occupies.
• Length- distance between two points

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Extensive Physical Properties

• Look at your pencil or pen, if you break it in
  half, the extensive properties will be different.
• The pieces will have a different mass, weight,
  volume, and length.
• Extensive properties depend on size

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INTENSIVE Physical Property

• Intensive - Properties that do not depend on the
  amount of the matter present.
• Color
• Odor
• Luster (Shiny, glassy, dull)
• Malleability (can it be flattened)
• Ductility (can it be pulled into a wire)
• Electrical Conductivity (can it conduct
  electricity)
• Hardness (on a Mohs scale)
• Melting/Freezing/Boiling Points
• Density
• State of Matter (solid, liquid, gas)

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Intensive Physical Properties

• Look at your pencil or pen, if you break it in
  half, the intensive properties will be the same.
• Its still yellow, the graphite still has a
  hardness of 2, the density of each piece hasnt
  changed, and its still a solid.
• Intensive properties DONT depend on size

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Chemical Properties

• Chemical property a property that can only be
  observed by changing the composition (chemical
  formula) of the material.
• Does it have the potential to change into a new
  substance?

• Examples
• Will it burn?
• Will it rust?
• Will it react with vinegar (acids) or other
  chemicals?

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Properties of Matter

• Why do I care? Understanding the different
  properties of matter will help you to better
  classify and describe the world around you.

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Physical and Chemical Properties can be used to
identify matter

• Gold or fools gold?
• Diamond or quartz?
• Oak or Maple?
• Metamorphic or Igneous?
• Zinc or Aluminum?

http//www.youtube.com/watch?vuJOGy0dgmUU Propert
ies song
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Challenge Use physical properties to identify
your cookie

• Problem Can you observe and record the physical
  properties of a cookie and later identify it from
  a pile of other cookies?
• Safety Do not open the bag and do not eat the
  cookie!