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Elements compounds-mixtures-1

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  • 1. Classifying Matter:Elements, Compounds, and Mixtures By Liz LaRosa 5th Grade Science www.middleschoolscience.com 2009
  • 2. Pure SubstancesA sample of matter that has definite chemical and physical properties.
  • 3. Elementspure substance that cannot be separated into simpler substance by physical or chemical means.
  • 4. CompoundsPure substance composed of two or more different elements joined by chemical bonds. Made of elements in a specific ratio that is always the same Has a chemical formula Can only be separated by chemical means, not physically
  • 5. 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 physicallyChem4kids.com
  • 6. Mixtures vs. Compounds http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_6.shtml
  • 7. 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.
  • 8. Element, Compound, or Mixture? Rocks
  • 9. Element, Compound, or Mixture? Rocks
  • 10. Element, Compound, or Mixture? Copper
  • 11. Element, Compound, or Mixture? Copper
  • 12. Element, Compound, or Mixture? Jelly Beans
  • 13. Element, Compound, or Mixture? Jelly Beans
  • 14. Element, Compound, or Mixture? Table Sugar
  • 15. Element, Compound, or Mixture? Table Sugar
  • 16. Element, Compound, or Mixture? Diamond
  • 17. Element, Compound, or Mixture? Diamond
  • 18. Element, Compound, or Mixture? Tea
  • 19. Element, Compound, or Mixture? Tea
  • 20. Element, Compound, or Mixture? Salt
  • 21. Element, Compound, or Mixture? Salt
  • 22. Element, Compound, or Mixture? Neon Gas
  • 23. Element, Compound, or Mixture? Neon Gas
  • 24. Element, Compound, or Mixture? Salad
  • 25. Element, Compound, or Mixture? Salad
  • 26. Element, Compound, or Mixture? Pure Water
  • 27. Element, Compound, or Mixture? Pure Water
  • 28. Element, Compound, or Mixture? Aluminum
  • 29. Element, Compound, or Mixture? Aluminum
  • 30. Element, Compound, or Mixture? Lemonade
  • 31. Element, Compound, or Mixture? Lemonade
  • 32. Element, Compound, or Mixture? Silver
  • 33. Element, Compound, or Mixture? Silver
  • 34. Element, Compound, or Mixture? Sand
  • 35. Element, Compound, or Mixture? Sand
  • 36. NotesDetailed notes are located at:http://www.middleschoolscience.com/elements-compounds-mixtuFlow Chart: http://www.middleschoolscience.com/matter-flow-chart-isn.pdf