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CLASSIFYING MATTER: ELEMENTS, COMPOUNDS, AND MIXTURES TUESDAY 9-27-11

CLASSIFYING MATTER: ELEMENTS, COMPOUNDS, AND MIXTURES TUESDAY 9-27-11. Warm–up: Compare and Contrast. MYP Unit Question : How can such a small thing

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CLASSIFYING MATTER: ELEMENTS, COMPOUNDS, AND MIXTURES TUESDAY 9-27-11

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  1. CLASSIFYING MATTER:ELEMENTS, COMPOUNDS, AND MIXTURESTUESDAY 9-27-11 Warm–up: Compare and Contrast

  2. MYP Unit Question: How can such a small thing impact our environment in such a big way?Area of Interaction: EnvironmentEssential Question: How are elements, compounds, and mixtures different? Learner Profile Words: Knowledgeable Communicator Inquirer S8P1. Students will examine the scientific view of the nature of matter. B. DESCRIBE THE DIFFERENCE BETWEEN PURE SUBSTANCES (ELEMENTS AND COMPOUNDS) AND MIXTURES.

  3. Opening

  4. Work Session: Cornell Notes

  5. Pure Substances • A sample of matter that has definite chemical and physical properties. Atoms Elements Compounds Molecules

  6. Elements • pure substance that cannot be separated into simpler substance by physical or chemical means.

  7. Compounds H2O Pure substance composed of two or more different elements joined by chemical bonds. • Made of elements in a specific ratio that are always the same • Has a chemical formula • Can only be separated by chemical means, not physically NaCl CO2

  8. Mixtures • A combination of two or more pure substances that are not chemically combined. • substances held together by physical forces, not chemical • No chemical change takes place • Each item retains its properties in the mixture • They can be separated physically Chem4kids.com

  9. Two types of Mixtures • Heterogeneous mixtures: Physically distinct parts with different properties. You usually can see the separate parts (chunky) • Ex. Salt and pepper mixed together • Homogeneous mixtures (solutions): • Ex. Salt water

  10. Mixtures vs. Compounds http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_6.shtml

  11. Closing:Can you identify the following? You will be shown a series of photos. Tell if each photo represents an item composed of an element, compound, or mixture. Review: • An element contains just one type of atom. • A compound contains two or more different atoms joined together. • A mixture contains two or more different substances that are only physically joined together, not chemically. • A mixture can contain both elements and compounds.

  12. Element, Compound, or Mixture? Rocks

  13. Element, Compound, or Mixture? Rocks

  14. Element, Compound, or Mixture? Copper

  15. Element, Compound, or Mixture? Copper Cu

  16. Element, Compound, or Mixture? Jelly Beans

  17. Element, Compound, or Mixture? Jelly Beans

  18. Element, Compound, or Mixture? Table Sugar

  19. Element, Compound, or Mixture? Table Sugar C12H22O11

  20. Element, Compound, or Mixture? Diamond

  21. Element, Compound, or Mixture? Diamond C

  22. Element, Compound, or Mixture? Tea

  23. Element, Compound, or Mixture? Tea

  24. Element, Compound, or Mixture? Salt

  25. Element, Compound, or Mixture? NaCl Salt

  26. Element, Compound, or Mixture? Neon Gas

  27. Element, Compound, or Mixture? Ne Neon Gas

  28. Element, Compound, or Mixture? Salad

  29. Element, Compound, or Mixture? Salad

  30. Element, Compound, or Mixture? Pure Water

  31. Element, Compound, or Mixture? Pure Water H2O

  32. Element, Compound, or Mixture? Aluminum

  33. Element, Compound, or Mixture? Aluminum Al

  34. Element, Compound, or Mixture? Lemonade

  35. Element, Compound, or Mixture? Lemonade

  36. Element, Compound, or Mixture? Silver

  37. Element, Compound, or Mixture? Silver Ag

  38. Element, Compound, or Mixture? Sand

  39. Element, Compound, or Mixture? Sand

  40. Notes • Detailed notes are located at: http://www.middleschoolscience.com/elements-compounds-mixtures-notes-isn.pdf • Flow Chart: http://www.middleschoolscience.com/matter-flow-chart-isn.pdf

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