T / F An increase in polymer cross-linking will decrease the ductility of a polymer T / F An increase in the strain rate will increase the strength of a plastic T / F An increase in temperature will increase the ductility of a plastic T / F In general terms, a thermoset is more easily recycled than a thermoplastic T / F Fillers can be added to a polymer to improve tensile strength and toughness T / F Unsaturated macromolecules tend to have more complicated 3D shapes than saturated molecules T / F For polymeric materials, the addition of polar side atoms or groups causes their glass transition temperatures to increase