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Physical Science - Understanding Matter: Homework Help 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!

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Question 1 1. An endothermic reaction is:

Question 2 2. What is the triple point?

Question 3 3. How would you best separate solid sugar from a solution of sugar water?

Question 4 4. The phase change when a solid goes directly to a gas is called:

Question 5 5. What is a dipole-dipole force?

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Question 6 6. A London Dispersion force is:

Question 7 7. You performed paper chromatography on some marker ink and found that one of the pigments had a retention factor of 0.25. The total distance the solvent traveled was 8.0 cm. How far did the pigment travel?

Question 8 8. Compound X is converted to elements A and B. Compound X has undergone a _____ reaction.

Question 9 9. Alcohol and water are best separated from one another by:

Question 10 10. What is NOT something that you would find on a phase diagram?

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Question 11 11. Which type of reaction always requires oxygen to be a reactant?

Question 12 12. Substances in which phase of matter have the most space between its particles?

Question 13 13. A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?

Question 14 14. Ocean water is a good example of a mixture because _____

Question 15 15. 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?

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Question 16 16. When a bond forms, this is an example of

Question 17 17. A piece of copper wire contains 5 moles of copper atoms. What is its mass?

Question 18 18. An example of condensation is:

Question 19 19. Which of the following is a chemical property of the element hydrogen?

Question 20 20. What is the most common state of matter in the universe?

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Question 21 21. A tenth of a mole of pennies contains how many pennies?

Question 22 22. Homogeneous mixtures are also called

Question 23 23. A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

Question 24 24. The ability of iron to react to oxygen is an example of _____

Question 25 25. What is NOT something that a phase equilibrium line shows?

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Question 26 26. At the melting point and boiling point what happens?

Question 27 27. What was the Kinetic Molecular Theory designed to explain?

Question 28 28. Which of the following is a double-replacement reaction?

Question 29 29. The phase change when gas turns directly into a solid is called:

Question 30 30. What does it mean when the enthalpy change for a reaction is negative?

Physical Science - Understanding Matter: Homework Help 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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