Properties of Matter

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PropertiesofMatter

• Glencoe Physical Science C15S2
• Holt McDougal Physical Science C2S2

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NGSS Florida Standard

• SC912P8.2
• Differentiate between physical and chemical
  properties and physical and chemical changes of
  matter

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What are Physical Properties?

• Physical property characteristic that can be
  observed without changing the identity of the
  substance.
• Properties of an object are determined by the
  properties of the materials the object is made of

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Measurable properties

• Strength
• Hardness
• Magnetism
• Ability to conduct heat
• Ability to conduct electricity

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Which Physical Properties Depend on Amount

• Mass
• Volume
• Area

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Which Physical Properties Do Not Depend on Amount

• State of matter
• Melting point
• Boiling point
• Density

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About Melting Point and Boiling Point

• State the physical form of a substance
• Melting Point temperature at which a substance
  changes from a solid to a liquid
• Boiling Point temperature at which a substance
  changes from a liquid to a gas

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Density

• The amount of matter in a certain volume of a
  substance
• Density mass/volume
• On your whiteboard, calculate the density for a
  10.0cm3 of ice that has a mass of 9.17kg.

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How would you answer?

• What determines the properties of an object?
• What are two physical properties of an object
  that depend on the amount of material you have?
• What is a state?
• What is the density of 10kg mass of water?
• How would you rearrange the density equation to
  show how to find the mass of a substance if you
  know the volume and density?
• If a piece of metal has a density of 11.3g/cm3
  and a volume of 6.7 cm3, what is the mass of the
  metal?

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Density vs. Weight

• Weight exertion of gravity upon matter linear
  measurement
• Density concentration of mass in a given
  volume derived measurement

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What Are Chemical Properties?

• Chemical property how a substance changes into
  a new substance
• Not as easy to observe as physical properties
• Substances combine or break apart

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Examples of Chemical Properties

• Flammability the ability to burn
• Nonflammability the inability to burn
• Reactivity ability of a substance to react with
  another substance

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More About Reactivity

• Reactive elements are usually found as compounds
• Less-reactive elements are more likely to be
  uncombined.

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Which type property is it?
Material or object Observation Physical or chemical property?
Chalk Forms bubbles when put into vinegar
Ice cream Melts in the sun
Tin Bend easily
Paper Burns quickly
Liquid water Evaporates
Car door Starts to rust
Helium balloon Floats in air