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Transcript

  • 1. States of Matter
    • If you squeezed a small but delicious packet of fancy ketchup, how would it change?
    • If you squeezed a baseball, how would it change?
    • What could this tell you about the properties of solids and liquids?
  • 2. Describing the States of Matter
    • There are three states of matter we see and use the most on Earth.
    • We categorize materials as solids, liquids, and gases based on whether their shapes and volumes are definite or variable.
    • Shape and volume are clues to how the particles within a material are arranged.
  • 3. States of Matter
    • We (on Earth) use 3 the most often, but there are actually 5!
    • PLASMA
    • GAS
    • LIQUID
    • SOLID
    • BOSE-EINSTEIN CONDENSATE
  • 4. PLASMA
    • 99% of all matter is in this phase
    • Occurs at VERY high temperatures, like those on the sun
  • 5. BOSE-EINSTEIN CONDENSATE: The Beginning
    • Using an idea from Bose’s paper about the behavior of light, Einstein applied the idea to matter under certain conditions
    • In 1995 (!), after Einstein’s death, scientists produced this 5 th phase of matter & it behaved just as Einstein had predicted decades before!
  • 6.
    • Occurs near –273 degrees C
    • Groups of atoms behave as a single particle
    • Also called a BEC
    BOSE-EINSTEIN CONDENSATE
  • 7. STATES OF MATTER Both volume and shape distinguish states of matter. LIQUID a.Definite b.Definite shape volume SOLID GAS c. Variable d. Variable shape Volume
  • 8. Describing the States of Matter
    • SOLIDS
    • A solid is a state of matter in which materials have a definite shape and a definite volume. The shape or volume will not change.
  • 9. Describing States of Matter
    • LIQUIDS
    • A liquid always has the same shape as its container and can be poured from one container to another.
    • Liquid is the state of matter in which a material has definite volume but not a definite shape.
  • 10. Describing States of Matter
    • GASES
    • Gas is a state of matter in which a material has neither a definite shape nor a definite volume.
    • A gas takes the shape and volume of its container.
  • 11. What is going on at the particle level to make matter behave this way? Check out the info on pp 71-4.