CSET Science Subtest II Chemistry (218): Practice & Study Guide  /  Science Courses

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Energy Conservation & Transfer 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. According to the heating/cooling curve for any given substance, when a substance reaches its melting/freezing point what phase(s) is(are) present?

Question 2 2. At the liquid phase of a substance, temperature ________ as heat is being added.

Question 3 3. Heating and cooling curves show the _______ a given substance undergoes as the temperature of the substance changes.

Question 4 4. Which of the following is a measure of the potential energy of the particles in a substance?

Question 5 5. What is the internal energy of a system?

Page 2

Question 6 6. The faster a particle moves, the more _____ it has.

Question 7 7. What takes more energy: changing a liquid to a gas or changing a solid to a liquid?

Question 8 8. 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 9 9. 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.

Question 10 10. The method by which nutritionists determine the energy content of food is known as the _____.

Page 3

Question 11 11. How much energy does it take to heat 75 grams of water from 50 to 70°C?

Question 12 12. Express 55.3 J of heat (or energy) in units of calories.

Question 13 13. When manipulating thermochemical equations, if I divide the coefficients of the chemical reaction of one step by 3, then what do I need to do to the enthalpy change value?

Question 14 14. Which of the following is TRUE of a thermochemical equation?

Question 15 15.

2Ba(s) + O2(g) → 2BaO(s) deltaH = -1107.0 kJ

Ba(s) + CO2(g) + ½O2(g) → BaCO3(s) deltaH = - 822.5 kJ

Given the data above, calculate delta H for the following reaction:

BaCO3(s) → BaO(s) + CO2(g)

Page 4

Question 16 16. Which of the following is a similarity between photosynthesis and cellular respiration?

Question 17 17. What is the relationship between energy transformations in photosynthesis and cellular respiration?

Question 18 18. Which of the following describes the reactions in photosynthesis?

Question 19 19. Consider a ball at the end of a string. If the ball is swinging back and forth, at what point in the swing would the ball have the most potential energy?

Question 20 20. To which of the following variables is kinetic energy proportional?

Page 5

Question 21 21. A bike resting at the top of a hill would be an example of what type of energy?

Question 22 22.

Which of the following situations represents thermal energy being converted into another type of energy:

I. Boiling a pot of water

II. Starting an automobile engine

III. A windmill

Question 23 23.

What types of energy can mechanical energy be transformed into?

I. Electrical Energy

II. Thermal Energy

III. Nuclear Energy

Question 24 24.

Which of the following can be converted into thermal energy:

I Nuclear Energy

II Electrical Energy

III Mechanical Energy

Question 25 25. What is the enthalpy change of reaction for the reaction between chlorine and ethane that produces chloroethane and hydrogen chloride gases? The reaction is illustrated below:

Page 6

Question 26 26. Which is an INCORRECT statement about the following picture?

Question 27 27. Which of the following statements is true?

Question 28 28. Which statement is correct about heat?

Question 29 29. _____ is a measure of the random motion of particles. _____ is the transfer of energy between two objects due to temperature difference.

Question 30 30. The enthalpy change of a reaction can be calculated using the following equation:

Energy Conservation & Transfer 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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