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College Properties of Matter Questions

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College Properties of Matter
College Properties of Matter
A change in a substance's chemical composition is a:
  1. natural change
  2. chemical change
  3. chemical mixture
  4. chemical synthesis
College Properties of Matter
Assuming that the phase diagram for water is shown below, how can the phase diagram be manipulated to create a phase diagram similar to that of carbon dioxide?
Phase Diagram
  1. Extend the range of pressures applicable for the gas phase
  2. Extend the range of temperatures at which the liquid phase exists
  3. Lower the temperature and pressure of the critical point
  4. Extend the range of temperatures and pressures at which the solid phase exists
College Properties of Matter
College Properties of Matter
Which of the following correctly defines the viscosity of a substance?
  1. Its resistance to an increase in its surface area
  2. Its resistance to flow
  3. A measure of its intermolecular forces, using physical properties, boiling point
  4. Its tendency to flow
College Properties of Matter
College Properties of Matter
Which of the following does NOT exist on one of the lines or curves shown in the phase diagram below?
Phase Diagram
  1. solid-liquid equilibrium
  2. solid-gas equilibrium
  3. solid phase
  4. liquid-gas equilibrium
  5. critical point
College Properties of Matter
Which of the following changes would lead to sublimation in a sample of carbon dioxide?
  1. An increase in pressure and temperature, starting at 0 kPa
  2. An increase in pressure while keeping temperature constant, starting at a very low pressure
  3. A decrease in pressure while keeping temperature constant
  4. A decrease in temperature while keeping pressure constant
College Properties of Matter
Which combination of temperature and pressure would lead to a solid?
  1. High temperature and high pressure
  2. High temperature and low pressure
  3. Low temperature and low pressure
  4. Low temperature and high pressure
College Properties of Matter
How does the phase diagram shown below for water differ from most phase diagrams?
Phase Diagram
  1. The triple point is unusually high for water
  2. The liquid-gas phase boundary typically curves downward, whereas, with water, it curves upward
  3. The solid-gas phase boundary typically points to the right, whereas, in the case of water, it points to the left
  4. None of the above
College Properties of Matter
Starting at a solid, how can a system be manipulated to change the liquid into a solid?
  1. Increase the temperature in an isobaric process
  2. Decrease the pressure in an isothermal process
  3. Increase the pressure in an isothermal process
  4. Decrease the temperature in an isobaric process
College Properties of Matter
Which of the following refers to the highest temperature at which liquids and gases can coexist?
  1. triple point
  2. critical pressure
  3. critical point
  4. none of the above
College Properties of Matter
Which of the following exists beyond the critical point?
  1. Triple Point
  2. A gas
  3. A liquid
  4. A supercritical fluid
College Properties of Matter
What is the number of moles of an ideal gas in a 1.75-L container at 290 K and a pressure of 0.650 atm? (R=0.0821 L•atm/mol•K)
  1. 0.048 mol
  2. 20.83 mol
  3. [math] 2.09 xx 10^-3 [/math] mol
  4. [math] 4.19 xx 10^-4 [/math] mol
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