These are 10 fairly straight foward mutiple choice questions. If you could provi
ID: 780195 • Letter: T
Question
These are 10 fairly straight foward mutiple choice questions. If you could provide a breief scentence on why you chose each answer you did that would be great. Many of the questions have image Links provided.
1. Image- https://secure.surveymonkey.com/_resources/15782/40125782/d67f4c3b-457d-4537-b1d9-471bf9a7064b.jpg
The diagram (Figure 1) above shows the reaction between hydrogen and iodine.
The reaction between hydrogen (H2) and iodine (I2) to form hydrogen iodide (HI) (______________).
Which answer best completes the sentence?
The diagram (Figure 1) above shows the reaction between hydrogen and iodine. The reaction between hydrogen (H2) and iodine (I2) to form hydrogen iodide (HI) (______________). Which answer best completes the sentence?
A. absorbs heat energy
B. releases heat energy
C. absorbs and releases equal amounts of heat energy
D. does not involve heat energy
2.Which of the following statements describes correctly what has happened, in terms of energy, in the chemical reaction of sodium with chlorine to form sodium chloride?
Which of the following statements describes correctly what has happened, in terms of energy, in the chemical reaction of sodium with chlorine to form sodium chloride?
A. The total output of energy is less than the total input of energy.
B. The total output of energy is greater than the total input of energy.
C. The total output of energy is the same as the total input of energy.
3. Image- https://secure.surveymonkey.com/_resources/15782/40125782/0e48e39f-2d59-4a2c-836f-3dcce462a043.jpg
(See Figure 2) What type of energy does each energy level represent?
(See Figure 2) What type of energy does each energy level represent?
A. Heat energy
B. Bond energy
C. Potential energy
D. Chemical energy
4. When the light generated by heated sodium chloride crystals in a flame is passed through a prism, a screen behind the prism shows yellow lines. Why does this phenomenon happen?
When the light generated by heated sodium chloride crystals in a flame is passed through a prism, a screen behind the prism shows yellow lines. Why does this phenomenon happen?
A. Because the flame used to heat the sodium chloride crystal has a yellow color.
B. Because electrons in sodium atoms give off a specific amount of energy.
C. Because sodium atoms react with chlorine atoms in the flame and releases a certain amount of energy.
D. Because the prism absorbs other color lights and only transmits yellow light.
5. Image- https://secure.surveymonkey.com/_resources/15782/40125782/230a15db-89c7-4f06-a9dd-35bdf4257910.jpg
Which of the above processes is spontaneous? (see Figure 3)
A. 1
B. 2
C. 3
D. 1 and 2
E. 2 and 3
F. 1 and 3
6. An excited electron gives off radiation as it moves back to a lower energy level. Which of the following best describes the amount of energy of the radiation?
An excited electron gives off radiation as it moves back to a lower energy level. Which of the following best describes the amount of energy of the radiation?
A. The amount of energy of the radiation is arbitrary due to energy loss during the process
B. The amount of energy of the radiation is equal to the amount of final energy plus the amount of initial energy of the electron
C. The amount of energy of the radiation is equal to the amount of initial energy minus the amount of final energy of the electron
7. Object 1 and Object 2 are both made up of the same type of molecules and the same number of molecules. Object 1 has more thermal energy than Object 2. Do the molecules of Object 1 have more, less, or the same amount of kinetic energy as compared to the molecules of Object 2?
Object 1 and Object 2 are both made up of the same type of molecules and the same number of molecules. Object 1 has more thermal energy than Object 2. Do the molecules of Object 1 have more, less, or the same amount of kinetic energy as compared to the molecules of Object 2? A. The molecules of Object 1 have more kinetic energy than the molecules of Object 2.
B. The molecules of Object 1 have less kinetic energy than the molecules of Object 2.
C. The molecules of Object 1 have the same amount of kinetic energy as the molecules of Object 2.
8. Image- https://secure.surveymonkey.com/_resources/15782/40125782/7750ebe4-1ce6-4a00-a068-918b06401621.jpg
(See Figure 4) Which of the following best explains the energy change of the gas particles in the cylinder as the gas is heated by a Bunsen burner? (Note: Assume that the gas is an ideal gas)
(See Figure 4) Which of the following best explains the energy change of the gas particles in the cylinder as the gas is heated by a Bunsen burner? (Note: Assume that the gas is an ideal gas)
A. The gas particles have more potential energy than before.
B. The gas particles have less potential energy than before.
C. The gas particles have same mechanical energy as before.
D. The gas particles have same kinetic energy as before.
E. The gas particles have more kinetic energy than before.
9. Image- https://secure.surveymonkey.com/_resources/15782/40125782/6b2874be-1d7c-479d-bc39-170af9bd7e59.jpg
(See Figure 5) After forming hydrogen iodide (HI), the entropy of the system is
(See Figure 5) After forming hydrogen iodide (HI), the entropy of the system is
A. same
B. increased
C. decreased
10. image- https://secure.surveymonkey.com/_resources/15782/40125782/d3e6981a-a4aa-46bb-85b0-f5fc8e505441.jpg
The picture above illustrates a closed system including a vessel containing a gas. As the temperature of the system increases, the gas lifts the piston along with the weight on top of it. If the system absorbed heat energy and lifted the piston, how has the internal energy of the system changed? (Assume that the gas is an ideal gas)
The picture above illustrates a closed system including a vessel containing a gas. As the temperature of the system increases, the gas lifts the piston along with the weight on top of it. If the system absorbed heat energy and lifted the piston, how has the internal energy of the system changed? (Assume that the gas is an ideal gas)
A. The change in internal energy is equal to the amount of heat energy supplied to the system
B. The change in internal energy is equal to the amount of increasing potential energy of the piston
C. The change in internal energy is equal to the amount of heat energy supplied to the system minus the amount of work done by the system
D. The change in internal energy is equal to the amount of work done by the system on the surroundings
E. The change in internal energy is zero.
Explanation / Answer
Q.1- Option B, Q.2- Option B,Q.3. Option C,Q.4- Option B,Q.5-E,Q.6-C,Q.7-A,Q.8-C,Q.9-A,Q.10-C
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