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Heterogeneous Mixtures December 3, 2009 We are using the clickers today!
Objectives <ul><li>Compare and contrast a solution, suspension and a colloid </li></ul><ul><li>Describe and give examples ...
 
Solutions <ul><li>Have dissolved particles </li></ul><ul><li>Do not separate </li></ul><ul><li>Cannot be filtered </li></u...
<ul><li>The individual components of a mixture are present in </li></ul><ul><li>similar amounts </li></ul><ul><li>regular ...
<ul><li>Which of the following is a homogeneous mixture? </li></ul><ul><li>fruit salad </li></ul><ul><li>kool aide </li></...
<ul><li>What is considered to be the universal solvent? </li></ul>
Suspensions <ul><li>A heterogeneous mixture in which particles of the material are dispersed throughout a liquid or gas. <...
Examples of Suspensions <ul><li>Snow globes </li></ul><ul><li>Muddy water </li></ul><ul><li>Salad dressing </li></ul><ul><...
Colloids A colloid is a mixture that has the properties of both a solution and a suspension.
Colloids <ul><li>Particles are small but do not dissolve </li></ul><ul><li>Mixture can not be separated by passing them th...
<ul><li>The particles in a suspension are _________ than the particles in a colloid. </li></ul><ul><li>a. larger </li></ul...
 
Tyndall effect Colloidal suspensions can scatter rays of light.
 
<ul><li>How are colloids similar  to solutions? </li></ul><ul><li>Both are mixtures </li></ul><ul><li>Both contain dissolv...
Examples of Colloids <ul><li>Fog </li></ul><ul><li>Whipped cream </li></ul><ul><li>Milk </li></ul><ul><li>Cheese </li></ul...
<ul><li>If the label on a medicine bottle says &quot;shake well before using&quot;, the medicine is probably a </li></ul><...
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Colloids2008

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Colloids2008

  1. 1. Heterogeneous Mixtures December 3, 2009 We are using the clickers today!
  2. 2. Objectives <ul><li>Compare and contrast a solution, suspension and a colloid </li></ul><ul><li>Describe and give examples of suspensions and colloids </li></ul>
  3. 4. Solutions <ul><li>Have dissolved particles </li></ul><ul><li>Do not separate </li></ul><ul><li>Cannot be filtered </li></ul><ul><li>Do not scatter light </li></ul>
  4. 5. <ul><li>The individual components of a mixture are present in </li></ul><ul><li>similar amounts </li></ul><ul><li>regular amounts </li></ul><ul><li>fixed amounts </li></ul><ul><li>different amounts </li></ul>
  5. 6. <ul><li>Which of the following is a homogeneous mixture? </li></ul><ul><li>fruit salad </li></ul><ul><li>kool aide </li></ul><ul><li>chocolate chip cookie </li></ul><ul><li>a bowl of yogurt and fruit </li></ul>
  6. 7. <ul><li>What is considered to be the universal solvent? </li></ul>
  7. 8. Suspensions <ul><li>A heterogeneous mixture in which particles of the material are dispersed throughout a liquid or gas. </li></ul><ul><li>The particles in a suspension are insoluble, so they settle out. </li></ul><ul><li>Can be separated by passing them through a filter. </li></ul>
  8. 9. Examples of Suspensions <ul><li>Snow globes </li></ul><ul><li>Muddy water </li></ul><ul><li>Salad dressing </li></ul><ul><li>Paint </li></ul>
  9. 10. Colloids A colloid is a mixture that has the properties of both a solution and a suspension.
  10. 11. Colloids <ul><li>Particles are small but do not dissolve </li></ul><ul><li>Mixture can not be separated by passing them through a filter. </li></ul>
  11. 12. <ul><li>The particles in a suspension are _________ than the particles in a colloid. </li></ul><ul><li>a. larger </li></ul><ul><li>b. smaller </li></ul><ul><li>c. more soluble </li></ul><ul><li>d. less soluble </li></ul>
  12. 14. Tyndall effect Colloidal suspensions can scatter rays of light.
  13. 16. <ul><li>How are colloids similar to solutions? </li></ul><ul><li>Both are mixtures </li></ul><ul><li>Both contain dissolved solutes </li></ul><ul><li>Both can be separated </li></ul><ul><li>Both scatter beams of light </li></ul>
  14. 17. Examples of Colloids <ul><li>Fog </li></ul><ul><li>Whipped cream </li></ul><ul><li>Milk </li></ul><ul><li>Cheese </li></ul><ul><li>Blood plasma </li></ul><ul><li>Jell-o </li></ul>
  15. 18. <ul><li>If the label on a medicine bottle says &quot;shake well before using&quot;, the medicine is probably a </li></ul><ul><li>solution </li></ul><ul><li>suspension </li></ul><ul><li>colloid </li></ul><ul><li>compound </li></ul>

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