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States of matter


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States of matter

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