Physical and Chemical Properties

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Physical and Chemical Properties
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How would you describe this Dog?
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All substances have propertiesIncluding Animals
!

• We use properties to describe matter, such as.

Face (shape, expressions) Voice Height Paw prints
Eye color Fur color Teeth DNA
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What are properties?

• All Matter has observable and measurable
  qualities.
• We can use general properties to identify and
  describe substances.
• Two basic types of properties of matter Physical
  properties and Chemical properties

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Physical Properties

• Physical properties are used to identify,
  describe and classify matter.
• Characteristic of a substance that can be
  observed (using your senses) without changing the
  substance into something else.

Hardness Texture Color
Odor Taste Temperature
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Chemical Properties

• Chemical properties are characteristics involved
  when a substance interacts with another substance
  to change its chemical make-up.

Flammability Rusting Creating gas bubbles
Creating a new chemical product Reactivity with water pH
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Chemical properties

• A common chemical property is reactivity.
• Reactive to oxygen
• Reactive to air
• Reactive to water
• Notice that chemical properties arent EASY to
  observe, unlike physical properties.

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Physical vs. Chemical

• Physical properties observe without changing the
  identity of the substance
• Chemical properties observe only when the
  identity changes
• How do you know if it is a chemical or physical
  property?
• If it CHanges, its CHemical

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• Review Videos
• https//www.youtube.com/watch?vU5lwgmYr36U
  (review of definitions)
• https//www.youtube.com/watch?voF0lN0jZYx0
  (examples)
• Song
• https//www.youtube.com/watch?vuJOGy0dgmUU