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Pure Substances and Mixtures:

Pure Substances and Mixtures:. What You Need to Know. The next set of slides all contain images that are meant to give clues about the definition of the word above these images.

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Pure Substances and Mixtures:

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  1. Pure Substances and Mixtures: What You Need to Know

  2. The next set of slides all contain images that are meant to give clues about the definition of the word above these images. • As we go through the slides write down the word above the image and your thoughts on what the word means. The terms are all connected with Pure Substances and Mixtures!

  3. Mixtures

  4. Raw Material

  5. Pure Substance

  6. Mechanical Mixture

  7. Solution; Solute; Solvent; Dissolve

  8. How Do Your Definitions Match Up? • Mixtures: any substance that contains at least two pure substances • Raw Material: unprocessed material of any kind • Pure Substance: any solid, liquid, or gas that contains only one kind of particle throughout • Mechanical mixture: a heterogeneous mixture; in a mechanical mixture at least two substances are visible • Solution: a homogeneous mixture made of a solvent and one or more solutes; in a solution, only one substance is visible; a solution can be a solid, liquid, or gas • Solute: a substance that is dissolved in a solvent to form a solution • Solvent: a substance that dissolves in a solute to form a solution

  9. You will need to be comfortable with these terms as we proceed!

  10. What you need to know about the particles that make up Pure Substances and Mixtures The Particle Theory

  11. All of the items that we just looked at are made up of matter and therefore consist of particles! • Particles behave in a certain way click the link to find out more http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/particle_model/activity/ • Then read over the provided handout on the particle theory

  12. Now that you’ve seen the interactive video on the particle model and read over your hand out on the particle theory can you use it to explain what happened during the following experiment? • http://www.youtube.com/watch?v=Fhz4xsJ1LUo

  13. You are now armed with the necessary knowledge to examine, classify and analyze pure substances and mixtures! • In the next Science class you will be doing just that. Your “Important Terms” sheet and “Solutions vs. Mechanical Mixtures” chart will came in hand in this next period.

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