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Is it a Solid or Liquid? Discover Changes in Matter

Explore the world of non-Newtonian fluids with Diane McDonough. Learn about substances like corn starch and water, PVA and Borax, glue and starch solution, and more. Watch demonstrations of their unique properties and behavior, such as dilatancy under stress and self-siphoning. Discover how non-Newtonian fluids flow, stretch, bounce, and exhibit die swell. Uncover examples like quicksand, wet sand, printer's inks, starch solutions, and Silly Putty. Enhance your understanding of physical and chemical changes in matter through engaging experiments and demonstrations in this informative video series.

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Is it a Solid or Liquid? Discover Changes in Matter

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  1. Is it a solid or liquid?You decide! Changes in Matter Physical and Chemical Changes By Diane McDonough

  2. Substance 1: Corn Starch and water? Substance 2: PVA and Borax? Substance 3: Glue and Borax? Substance 4: Glue and Starch Solution?

  3. Neither a solid or liquid… So what are they? http://www.youtube.com/watch?v=r7a84816i_g http://www.youtube.com/watch?v=RUMX_b_m3Js

  4. NON-NEWTONIAN FLUIDS http://www.youtube.com/watch?v=r7a84816i_g

  5. According to Time Warp, what are some examples of Non- Newtonian fluids? • Corn Starch and Water • Blood • Ketchup

  6. A non-Newtonian fluid is a substance that is dilatant, that is, under stress, the material dilates or expands.

  7. Unusual Properties of Non-Newtonian • Under low stress, such as slowly pulling on the material, it will flow and stretch. If you are careful you can form a thin film • Pull sharply (high stress) and the material breaks • Pour the material from its container then tip the container upward slightly, the gel will self siphon • Put a small amount of the material on a table and hit it with your hand, there is no splashing or splattering • Throw a small piece onto a hard surface, it will bounce slightly • Stuff the material, through a tube, die swell occurs as it emerges

  8. Can you think of other examples of Non-Newtonian fluids?

  9. Some other Non-Newtonian Fluids: • Quicksand, • wet sand on the beach, • some printer’s inks, • starch solutions, • Silly Putty. http://www.youtube.com/watch?v=RUMX_b_m3Js

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