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7th Grade Chapter 4 Lesson 1
 

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)