Chemistry

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Chemistry

  1. 1. May.9 th .2010 Jenny kang
  2. 2. CONTENTS <ul><li>What is matter? </li></ul><ul><li>What is not matter? </li></ul><ul><li>What is pure substance? </li></ul><ul><li>What is element? </li></ul><ul><li>What is Compounds? </li></ul><ul><li>What is mixture? </li></ul><ul><li>Types of mixture (heterogeneous mixtures, homogenous mixtures, mechanical mixture, suspension, emulsion) </li></ul><ul><li>What is reversible change and non-reversible change? </li></ul><ul><li>What is physical change and chemical change? </li></ul>
  3. 3. Matter <ul><li>Is anything that has VOLUME and MASS </li></ul><ul><li>VOLUME – Is the amount of space something takes up (put picture of volume) </li></ul><ul><li>MASS – Is the amount of matter (put picture of mass) </li></ul>
  4. 4. Examples of matter
  5. 5. Is fire considered matter? <ul><li>Yes , fire is matter. Fire takes up the spaces and fire itself is mixture of vaporized fuel, oxygen, carbon dioxide, carbon monoxide, and water vapor, etc. So, fire is matter. </li></ul>
  6. 6. non-matter <ul><li>Is anything that doesn’t have volume and mass </li></ul><ul><li>※ shadow - Shadow doesn’t take up any place. </li></ul><ul><li>※ light -It doesn’t take up any space. </li></ul>
  7. 7. Non-matter <ul><li>※ heat - Heat isn't matter its just something you feel. </li></ul><ul><li>※ gravity - It is a force. It holds us on the surface of the earth, but we can't see it or feel it. </li></ul>
  8. 8. Pure substance <ul><li>A substance that contains only one kind of particle. </li></ul><ul><li>water salt </li></ul>
  9. 9. Element <ul><li>A pure substance that cannot be broken down into other substance. </li></ul><ul><li>beryllium lithium </li></ul><ul><li>boron gold </li></ul>
  10. 10. Compounds <ul><li>A substance that is containing two or more elements. </li></ul><ul><li>nitrogen oxygen </li></ul>
  11. 11. Homogenous Mixture <ul><li>The substance that we can ’t see the difference. </li></ul><ul><li>milk saltwater </li></ul>
  12. 12. Heterogeneous Mixtures <ul><li>The substance that we can see the difference. </li></ul>
  13. 13. Suspension <ul><li>A mixture that clumps of solid or liquid are scattered throughout. </li></ul><ul><li>soil fog </li></ul>
  14. 14. Emulsion <ul><li>A suspension that keeps the parts of the mixture from separating. </li></ul><ul><li>milk lotion </li></ul><ul><li>soap </li></ul>
  15. 15. Mechanical Mixture <ul><li>A mixture. We can see two or more different parts inside the mixture. </li></ul><ul><li>sand concrete </li></ul>
  16. 16. Reversible Change <ul><li>Changes that can be reversed </li></ul>
  17. 17. Non-reversible change <ul><li>Changes that cannot be reversed </li></ul><ul><li>coffee </li></ul>
  18. 18. Examples of physical change <ul><li>Mixing </li></ul><ul><li>Breaking </li></ul><ul><li>Cutting </li></ul><ul><li>melting </li></ul><ul><li>Boiling </li></ul><ul><li>Freezing </li></ul>
  19. 19. Examples of chemical change <ul><li>Rusting </li></ul><ul><li>Frying </li></ul><ul><li>Roasting </li></ul>
  20. 20. <ul><li>BYE~ </li></ul>

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