Physical and Chemical Properties and Changes - PowerPoint PPT Presentation

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Physical and Chemical Properties and Changes

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Physical and Chemical Properties and Changes Physical Properties Characteristics of a material that you can observe without changing the substances that make up the ... – PowerPoint PPT presentation

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Title: Physical and Chemical Properties and Changes


1
Physical and Chemical Properties and Changes
2
Physical Properties
  • Characteristics of a material that you can
    observe without changing the substances that make
    up the material
  • A PHYSICAL DESCRIPTION

3
Example
  • What are the physical properties of a pumpkin?
    (Physically Describe the Pumpkin)
  • Color Orange
  • Shape Round
  • Odor Smell it
  • Taste Yum
  • Texture - Touch
  • Mass Weigh it
  • Dimensions Measure it
  • Density Mass/Volume

4
Lets Ponder!!!!
  • If a physical property is a physical description
    of an object, what is a physical change

5
Physical Change
  • A change in the 1. SIZE
  • 2. SHAPE
  • 3. STATE OF
    MATTER
  • Although the physical characteristics of the
    substance have changed, chemically it is still
    the same substance

6
Example
  • H2O

Solid
Gas
Liquid
It is all still H2O
7
Example
  • Paper Demonstration
  • Salt Water Demonstration

8
Chemical Properties
  • A characteristic of a substance that indicates
    whether it can undergo a specific chemical change

9
In English Please!!!!
  • Properties that can alter or change matter into
    something different
  • Examples 1. Flammability
  • 2. Explosive
  • 3. Light Sensitive

10
Chemical Change
  • A change of one substance in a material to a
    different substance or the creation of an
    additional substance

11
Example
  • Nail Water
  • Nail is made of iron (physical property)
  • Iron when exposed to water and oxygen oxidizes
    (chemical property)
  • This means it rusts!!!!
  • Your nail is now iron oxide

12
Demonstration
  • Vinegar and Baking Soda
  • Exploding Balloon

13
Evidence of Chemical Changes
  • Fire/Burning
  • Bubbling/Gas production
  • Temperature Change without heating/cooling
  • Change in Color
  • Change in Odor
  • Forms a precipitate

14
Conclusion
  • Matter can undergo physical and/or chemical
    changes
  • Physical Changes alter the physical make up of
    the matter
  • Chemical Change changes or creates a new
    substance
  • Physical Property Physical description
  • Chemical Property Properties that determine how
    a substance behaves
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