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7th Grade Chapter 4 Lesson 1
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7th Grade Chapter 4 Lesson 1

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7th Grade Chapter 4 Lesson 1 7th Grade Chapter 4 Lesson 1 Presentation Transcript

  • Pgs. 125-133 For Student Use Only
  • Matter
    • Matter is all substances God created.
      • Material things are made up of matter
      • God is immaterial= not made of matter
      • Materialism- philosophy that states that nothing is real unless it is physical or material
    • Three states of Matter
      • Solid
      • Liquid
      • Gas
  • Matter
    • States of Matter:
      • Solid- definite shape and volume
        • Atoms arranged close together
      • Liquid- definite volume but NO shape
        • Atoms are arranged loosely
      • Gas- NO definite volume and NO definite shape
        • Atoms are arranged far apart
  • Matter
    • Changing states:
      • Matter will change from one state to another.
        • Solid to liquid= melting
        • Liquid to gas= evaporation
        • Liquid to solid= freezing
        • Gas to liquid= condenstion
        • Solid to gas= sublimation (dry ice= CO 2 )
  • Matter
    • Physical Properties:
      • Physical Properties- properties that can be determined without changing into a different substance
        • Examples:
          • Temperature
          • Odor
          • Color
          • Density
          • Ability to be dissolved
          • Conductivity
  • Matter
    • Physical Properties:
      • Quantification:
        • The systematic process of accurately measuring the things of nature and their parts
  • Matter
    • We measure:
      • Temperature= how hot or cold something is
        • Freezing point= temperature at which liquid turns into a solid
        • Boiling point= temperature at which liquid turns into a gas
        • Use a thermometer
        • Use °C or °F
      • Solubility
        • The ability to be dissolved
        • Higher temperature= more substance dissolved
        • Insoluable= not able to be dissolved
  • Matter
    • We measure:
      • Mass:
        • The quantity or amount of something
      • Weight
        • The measure of the force of gravity pulling down on an object
      • Weight and mass are related
        • More Mass= More Weight
  • Matter
    • We measure:
      • Density:
        • The mass of a substance divided by its volume
        • Every substance has a different density
          • Units= g/cm 3 or g/mL
        • Different objects have different densities
        • Densities change from state to state
          • Solids are typically more dense than liquids and gases
          • Water is special- ice less dense than water (water molecules have special arrangement)