5th Grade-Ch. 11 Lesson 3 How do phase changes occur

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5th Grade-Ch. 11 Lesson 3 How do phase changes occur

  1. 1. Ch. 11 Lesson 3 How do phase changes occur?
  2. 3. state (phase) of matter shape/ volume description solid definite shape & volume forces keep particles close together
  3. 4. state (phase) of matter shape/ volume description liquid no definite shape- definite volume takes shape of container
  4. 5. state (phase) of matter shape/volume description gas no definite shape- no definite volume particles far apart
  5. 9. freezing point <ul><li>same as melting point </li></ul><ul><li>physical property </li></ul><ul><li>water = 0 o C </li></ul><ul><ul><li>lower when salt added </li></ul></ul>
  6. 10. <ul><li>when materials cool  get smaller b/c particles have less space between them </li></ul><ul><li>except water </li></ul>
  7. 11. <ul><li>Water expands when it freezes. </li></ul>
  8. 12. boiling point <ul><li>temp. @ which liquid turns into gas bubbles </li></ul><ul><li>physical property </li></ul>
  9. 13. evaporation <ul><li>when particles leave a liquid ’s surface  gas </li></ul>
  10. 14. condensation <ul><li>gas  liquid </li></ul>F18 crossing the sound barrier with vapor condensation
  11. 16. Things that are invisible
  12. 17. invisible man
  13. 28. invisible water vapor
  14. 29. <ul><li>dew forms  when water vapor cools </li></ul>
  15. 31. <ul><li>steam </li></ul><ul><li>tiny water droplets </li></ul><ul><li>liquid state of water </li></ul>

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