11. Which of the following correctly represents the sequential change in mechanical state with increasing temperature for an amorphous polymer? a) viscous liquid; rubbery region, glass b) glass; viscous liquid; rubbery solid c) glass; rubbery solid; viscous liquid d) rubbery solid; glass; viscous liquid

11. Which of the following correctly represents the sequential change in mechanical state with increasing temperature for an amorphous polymer? a) viscous liquid; rubbery region, glass b) glass; viscous liquid; rubbery solid c) glass; rubbery solid; viscous liquid d) rubbery solid; glass; viscous liquid

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Find the FALSE statement regarding the phase diagram shown below. F D. Y X E 1.0 A Temperature (*C) Pressure (atm)
The vapor pressure of compound A is 205 torr at 25 °C while the vapor pressure of compound B is 284 at the same temperature. Which of the following best applies to the compounds? O A) Both listed conditions are true. O B) Both listed conditions are false. O C) The intermolecular forces between A molecules are less than those between B molecules. D) Compound A has a higher boiling point than compound B.
Answer the following questions concerning vapor pressure. a) Why doesn't a change in the surface area of a liquid cause a change in the equilibrium vapor pressure? b) What effect does increasing the temperature have on the equilibrium vapor pressure of a liquid? Explain!
20. On a relative basis, the weaker the intermolecular forces in a substance are, the a) larger is its heat of vaporization b) higher is its viscosity c) higher is its boiling point d) higher is its melting point e) greater is its vapor pressure at a particular temperature 21. Which pair of liquids is expected to be miscible? a) H2O and CCI4 b) Brz and H20 c) C6H6 and H20 d) C6H12 and CSH18 22. Which of these elements are the primary components in "hard water"? I. magnesium II. iron III. calcium IV. sodium a) I only b) I and III c) II and III d) III only e) II and IV
In ice , hydrogen bonds ———— causing ice to be ———— dense as a solid compared to as a liquid. A-Compress , more. B-Compress , less D- Expand , less C-Expand , more
Both HBr(g) and Kr(g) have similar molar masses (81 g/mol and 84 g/mol, respectively). Their boiling points, however, are very different. a) Which intermolecular force would be expected to have the same strength in these two chemicals, and why? b) Why are the boiling points so different? c) Which chemical do you expect to have the higher boiling point, and why?
Which is expected to have the highest heat of vaporization? A) CH₄ B) SiH₄ C) NH₃ D) PH₃ E) H₂O
Substance A has a smaller heat of vaporization than substance B.Which of the two substances undergoes a larger change in vaporpressure for a given change in temperature?
5.What happens when the vapor pressure of a liquid is equal to the external pressure? A) An equilibrium exists between the liquid and the solid state. B) The liquid freezes. C) The intermolecular forces become stronger in the liquid. D) The liquid boils. E) Dispersion forces become weaker in the liquid.