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Layering Liquids

Layering Liquids. Today you are going to: layer 4 unknown liquids in a straw so that none of the liquids mixes with another. Base: potato slice Straw: 45° angle Pipet: slowly add liquid. Class Discussion: What were the results?. Isopropyl alcohol. Fresh water.

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Layering Liquids

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  1. Layering Liquids

  2. Today you are going to:layer 4 unknown liquidsin a strawso that none of the liquids mixes with another

  3. Base: potato slice Straw: 45° angle Pipet: slowly add liquid

  4. Class Discussion:What were the results?

  5. Isopropyl alcohol Fresh water Salt water Glycerin

  6. Clean upCarefully place potato basein trash container…dropping it will splash the food coloring out of the straws!

  7. Class DiscussionWhy did the liquids layer that way?

  8. This beaker is filled with marbles. Can I fit anymore into this space?

  9. Will this salt fit in the beaker ?

  10. Now there is more stuff in here than before. Can I add anything more to this space?

  11. This is the same amount of space as when I started with just the marbles, but now there is a LOT more stuff in here. Jar is filled with water. It has dissolved some of the sugar at the top of the beaker.

  12. Scientists have a word to describe how much stuff is in a certain amount of space ~ density density = stuff space

  13. These terms don’t seem “official.” In math, what is space called? density = stuff space

  14. volume density = stuff = space volume

  15. What do we callstuffin science? density = stuff = space volume

  16. Matter which has mass density = stuff = mass space volume

  17. density = mass volume

  18. Isopropyl alcohol Fresh water Salt water Glycerin Salt water is more dense that fresh water, because in the same volume (amount) there are dissolved salts and other substances along with the water molecules. This means there is more mass in the same volume ~ making salt water more dense.

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