Examine samples of ldpe (sandwich bag, squeeze bottle) and hdpe (milk jug, grocery bag). What are some of the differences in the physical properties of these substances? : Polymer Chemistry

702

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A polymer's structure influences its physical properties. Describe two structural variations that are possible for polypropylene but not for polyethylene. : Polymer Chemistry

598

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What are some of the polymers that you encounter every day? Describe their physical properties. : Polymer Chemistry

680

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Atactic polypropylene is always produced with the [cp2zr(r)]+ catalyst. Explain this on the basis of molecular-level interactions. : Polymer Chemistry

564

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What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts? : Polymer Chemistry

576

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"Co-polymers" consist of two different monomers ("a" and "b") joined in an alternating fashion (ababab...). Block co-polymers also consist of two different monomers, but in this case blocks of polymer containing only a units are joined to blocks of polymer containing only b units (aaaaabbbbb...). How might block co-polymers be synthesized? : Polymer Chemistry

610

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Define corrosion? : Electrochemistry Corrosion

639

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Define an electro chemical cell. Give one example? : Electrochemistry Corrosion

575

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How an electrochemical is measured? Define emf of an electrochemical cell? : Electrochemistry Corrosion

576

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Write the significance of electrochemical series? : Electrochemistry Corrosion

553

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What are the differences between chemical and electrochemical corrosion? : Electrochemistry Corrosion

589

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What are the methods used to control the corrosion? : Electrochemistry Corrosion

552

---

Define an origin of electrode potential? : Electrochemistry Corrosion

532

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Define an electrochemical corrosion. What are the types of electrochemical corrosion? : Electrochemistry Corrosion

559

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Define electrochemical series? : Electrochemistry Corrosion

546

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