匿名
匿名 發問於 科學及數學化學 · 1 十年 前

about silly putty

i want to know whether silly putty is soluable in water or not and why? is it a covalent compound?

更新:

also, is silly putty biodegradable?

更新 2:

and why it is elastic?

1 個解答

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  • 匿名
    1 十年 前
    最佳解答

    facts:

    Silly Putty is a polymer made from silicone oil and boric acid. A polymer is a chain of molecules that are all tangled up. Silly Putty has flexible molecules that, when smooshed by fingers, slide over each other and cause the material to flow.

    Silly Putty is composed of 65% Dimethyl Siloxane (hydroxy-terminated polymers with boric acid), 17% Silica, quartz crystalline, 9% Thixotrol ST, 4% Polydimethylsiloxane, 1% Decamethyl cyclopentasiloxane, 1% Glycerine, and 1% Titanium Dioxide.

    answers to your questions:

    1. Silly Putty floats on water but not soluble in water because it is a non-polar covalent compound

    2. it is an inorganic compound so it is non-bio-degradable

    3. its elasticity is due to the ingredient polydimethylsiloxane (PDMS), a viscoelastic liquid. Viscoelasticity is a type of non-Newtonian flow, characterizing material that acts as a viscous liquid over a long time period but as an elastic solid over a short time period

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