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This is a report about homogeneous substances.

This is a report about homogeneous substances.

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Transcript

  • 1. Homogeneous Group 2
  • 2. Definition: The prefix “homo” – indicate sameness Homogeneous – A homogeneous mixture has the same uniform appearance throughout. Many homogeneous mixtures are commonly referred to as solutions.
  • 3. Mixtures • Two or more pure substances (elements or compounds) • Each retains its individual properties • Most stuff around you is a mixture, ex: air, most metals, etc
  • 4. Parts of a Solution • solute – the part of a solution that is being dissolved (usually the lesser amount) • solvent – the part of a solution that dissolves the solute (usually the greater amount) • solute + solvent = solution
  • 5. Identification Chart YES Uniform properties? If not, it’s a heterogeneous mixture YES Fixed composition? If not, it’s a homogeneous mixture Can be broken down chemically? If not, it’s an element If so it’s a compound
  • 6. Homogeneous Mixtures • Does mix evenly or uniformly • Always contains a single phase (ie: salt water) • Known as a solution • May be solids, liquids or gases • Solid-solid solutions of metals are called ALLOYS
  • 7. What is it? Cheerios
  • 8. Homogeneous
  • 9. What is it? Trail Mix
  • 10. Heterogeneous
  • 11. What is it? Kool - Aid
  • 12. Homogeneous
  • 13. What is it? Water
  • 14. Homogeneous
  • 15. What is it? White Vinegar
  • 16. Homogeneous
  • 17. What is it? Italian Salad Dressing
  • 18. Heterogeneous
  • 19. Try these……….. Raisin Bran
  • 20. Orange Juice
  • 21. Air
  • 22. Chunky Soup
  • 23. Hamburger
  • 24. Cake Batter
  • 25. Paint
  • 26. Salad
  • 27. Mineral Rock
  • 28. Answers: • • • • • • • • • Raisin Bran – heterogeneous Orange Juice – homogeneous Air – heterogeneous Chunky Soup – heterogeneous Hamburger – heterogeneous Cake Batter – homogeneous Paint – homogeneous Salad – heterogeneous Mineral Rock - heterogeneous