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States of matter
 

States of matter

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    States of matter States of matter Presentation Transcript

    • States of Matter
      7SCIENCE Thurs. April 7
    • Review: Kinetic Theory of Matter
      What is the kinetic theory of matter?
      All particles in matter are in constant, random motion
      What determines state of matter (solid, liquid or gas) ?
      Arrangement
      Movement (motion) of atoms
    • Kinetic Theory of Matter
      These energy produced by these moving particles is called kinetic energy
      The higher the temperature, the faster the particles are moving and more likely they will collide into other particles
      When particles collide, the faster-moving particles (hotter) transfer some energy to the slower-moving particles (cooler)
    • States of Matter: SOLID
      The lower the temperature, the slower the particles are moving (less energy)
      Solids: The particles have little motion, and are shaking in a specific arrangement/shape
    • States of Matter: Melting/Freezing Points
      If temperature ↑, the particles will shake faster and at a certain temperature they will break free of their shape
      This temperature is called the melting point solid  liquid
      When the opposite happens (liquid  solid) this temperature is called the freezing point
    • States of Matter: LIQUID
      In a liquid the particles are free to move and take the shape of its container
      Ex. Pour a glass of water:
      Forces hold the particles together as a liquid while gravity holds them at the bottom of the glass
    • State of Matter: GAS
      If temperature in the liquid increases, the particles begin to shake faster and escape the arrangement and forces of the liquid
      This temperature is called the boiling point and is called vaporization
      Particles are free to move around inany direction or shape