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Understanding Matter Lesson Plans 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. Which type of reaction always requires oxygen to be a reactant?

Question 2 2. Homogeneous mixtures are also called

Question 3 3. Alcohol and water are best separated from one another by:

Question 4 4. The ability of iron to react to oxygen is an example of _____

Question 5 5.

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

(The molecular mass of copper is 63.5 g/mol.)

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Question 6 6. What is the triple point?

Question 7 7. What is a dipole-dipole force?

Question 8 8. Which of the following is NOT an example of a compound?

Question 9 9. The phase change when gas turns directly into a solid is called:

Question 10 10. What does it mean when the enthalpy change for a reaction is negative?

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Question 11 11. _____ properties of matter can be determined without changing composition, while _____ properties of matter must change the composition of matter.

Question 12 12. An endothermic reaction is:

Question 13 13.

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

(The molecular mass of silicon is 28 g/mol.)

Question 14 14. Compound X is converted to elements A and B. Compound X has undergone a _____ reaction.

Question 15 15. Which is a slow way to separate solid sugar from a solution of sugar water?

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Question 16 16. Enthalpy change is

Question 17 17. Identify which general equation is a combination reaction.

Question 18 18. Which of the following is a double-replacement reaction?

Question 19 19. 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 20 20. A tenth of a mole of pennies contains how many pennies?

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Question 21 21. Which of the following is most likely to lead to a phase change?

Question 22 22.

Consider the reaction:

Mg +CuCl2 = MgCl2 + Cu

Which type of reaction is shown above?

Question 23 23. What are the properties of a solid?

Question 24 24. What is a phase diagram?

Question 25 25.

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?

(The molecular mass of carbon is 12 g/mol.)

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Question 26 26.

A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?

(Aluminum has a molecular mass of 27 g/mol.)

Question 27 27. A scientist measures the pressure and temperature of a sample. When they plot the data on their phase diagram, they make a point on a vertical line directly above the critical point. What's definitely true of the sample?

Question 28 28. An example of condensation is:

Question 29 29. When a bond forms, energy is given off to the surroundings. This is an example of

Question 30 30. Which state of matter generally has the highest density?

Understanding Matter Lesson Plans Chapter 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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