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Phase Changes for Liquids and Solids Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What is sublimation and why does it occur?

Question 2 2. What determines the shapes that different types of crystalline solids can take?

Question 3 3. A scientist measures the pressure and temperature of a sample. When they plot the data on their phase diagram, they make a point above the critical point. What's definitely true of the sample?

Question 4 4. What makes ionic crystals, such as calcium chloride, very hard and brittle?

Question 5 5. Why are metallic crystals, such as gold nuggets, known to be good conductors of electricity?

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Question 6 6. When you cross the line on a phase diagram and go from a solid to a liquid, what has occurred?

Question 7 7. An example of condensation is:

Question 8 8. How is water's phase diagram different from the phase diagram of carbon dioxide and carbon?

Question 9 9. Which of the following do phase diagrams show?

Question 10 10. Which of the following is NOT a characteristic of solid particles?

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Question 11 11. At the melting point and boiling point what happens?

Question 12 12. The complete three-dimensional arrangement of particles within a crystal is known as the _____, while the smallest repeating unit in the lattice is called the _____.

Question 13 13. Calculate how much heat energy is required to turn 100 grams of iron into a gas at its boiling point. The heat of vaporization for iron is 69.1 cal/g.

Question 14 14. What was the Kinetic Molecular Theory designed to explain?

Question 15 15. What of the following is NOT one of the types of crystals?

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Question 16 16. What is a dipole-dipole force?

Question 17 17. For water, how are pressure and boiling point related?

Question 18 18. The phase change when gas turns directly into a solid is called:

Question 19 19. Why does room temperature water disappear over time?

Question 20 20. What is NOT something that a phase equilibrium line shows?

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Question 21 21. What is the triple point?

Question 22 22. The amount of energy required change a liquid into a gas at its boiling point, is called:

Question 23 23. The phase change when a solid goes directly to a gas is called:

Question 24 24. Why are there plateaus on a heating curve?

Question 25 25. Gas can be turned into a plasma on Earth with the addition of:

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Question 26 26. How is freezing similar to deposition?

Question 27 27. Substances in which phase of matter have the most space between its particles?

Question 28 28. The energy required to change a solid to a liquid at its melting point is called:

Question 29 29. What is happening at the triple point on a phase diagram?

Question 30 30. Calculate how much heat energy (q) is needed to melt 10 grams of gold at its melting point. Note: gold has a heat of fusion of 15.4 cal/g.

Phase Changes for Liquids and Solids Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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