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Your Safer Source for Science
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Bulk samples of an element, a compound and a mixture may look similar “on the outside.” But when we talk about these concepts with students, we are asking them to see what they look like “on the inside”—we want them to imagine atoms and molecules and mixtures of these and notice how they are different. This “nuts and bolts” demonstration will help your students visualize abstract concepts relating to the classification of matter.


  • Classification
  • Elements
  • Mixtures
  • Chemical Compounds