Explain the relationship between plastic crystallinity and sensitivity to solvent attack
What will be an ideal response?
Highly crystalline polymers have strong secondary bonds that resist the formation of solvent-polymer bonds or, perhaps, require the formation of more or stronger solvent-polymer bonds to achieve solvent penetration into the polymer network. Hence, crystallinity reduces solvent sensitivity.
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Fill in the blank(s) with the appropriate word(s).
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a. white b. green c. black d. blue
The most important duty of a wildlife biologist is the planting of ____ plots
A) predator B) refuge C) food D) fencing
After 1848, which of Europe’s monarchies did NOT include the cultivation of public support and industrial modernization as governing policies?
a. Austria b. Prussia c. France d. Russia