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Properties of Matter. Chapter 18 Section 2. Physical Properties. Physical Property – any characteristic of a material that you can observe without changing the identity of a substance Examples: color, shape, size, density, melting and boiling points. Physical Properties. Appearance Shape

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properties of matter

Properties of Matter

Chapter 18 Section 2

physical properties
Physical Properties
  • Physical Property – any characteristic of a material that you can observe without changing the identity of a substance
    • Examples: color, shape, size, density, melting and boiling points
physical properties1
Physical Properties
  • Appearance
    • Shape
    • Color
    • State of matter
  • Behavior
    • Magnetism
    • Viscosity
    • Malleability
physical properties2
Physical Properties
  • Using Physical Properties to separate
    • Filter
    • Distillation
    • Use a magnet
    • Chromatography
    • Centrifuge
physical changes
Physical Changes
  • Physical Change – change is size, shape or state of matter
    • The identity of the element or compound does not change (new substance DOES NOT form)
    • Examples: Freeze, boil, evaporate, break, bend,
chemical properties and changes
Chemical Properties and Changes
  • Chemical Property – characteristic of a substance that indicates whether it can through a chemical change
    • Flammability
    • Combustibility
    • pH
chemical changes
Chemical Changes
  • Chemical change – a change from one substance to another, a change in chemical identity
    • Rusting, burning, digesting food, baking soda and vinegar
  • Clues to chemical changes:
    • Heating, cooling, formation of bubbles or solids
weathering chemical of physical
Weathering – chemical of physical
  • Physical
    • Large rocks split when water seeps in the cracks and then freezes
    • Streams cut through softer rocks and form canyons
weathering physical or chemical
Weathering – physical or chemical
  • Chemical
    • Limestone undergoes a chemical change when slightly acidic rainfall hits it.
    • Formation of stalactites in caves
the conservation of mass
The Conservation of Mass
  • The mass of all the substances that are present before a chemical change has to equal the mass of the substances after the change.
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