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EXAM 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIO
n n n n n n n n
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1. Which of the properties listed below is a characteris- B
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tic of a liquid but not of a gas?
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A. It has the ability to flow.
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B. It maintains its volume in an open container.
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C. Its molecules are constantly in motion.
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D. Its volume varies depending on temperature.
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2. A 0.100 m3 chamber is filled with oxygen gas at stan-
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nD dard conditions (101 kPa at 273 k). Assuming ideal co
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nditions and behavior, what will be the pressure of the g
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as in the chamber after it is heated to 819 k?
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A. 34 kPa n
B. 51 kPa n
C. 202 kPa n
D. 303 kPa n
3. In 1898, J.J.Thomson provided the first hard evidence C
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for the existence of subatomic particles in the atom by
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nusing a cathode ray tube to discover the
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A. proton.
B. neutron.
C. electron.
D. nucleus.
4. If all of the atoms in a substance have the same
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atomic number, the substance is a(an)
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A. compound.
B. element.
C. mixture.
D. alloy.
5. The balanced chemical equation for the formation of B
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iron (III) oxide is n n n
A. Fe + O2 -> FeO2. n n n n
B. 4Fe + 3O2 -> 2Fe2O3. n n n n
C. 3Fe + O2 -> Fe3O2. n n n n
D. Fe + O -> FeO. n n n n
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, FTCE MIDDLE GRADES SCIENCE 5-9 EXAM LATEST 2024-2025 ACTUAL
n n n n n n n n
EXAM 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIO
n n n n n n n n
NALES
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6. Small molecules that contain H bonded to O have
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higher boiling points than similar molecules in which
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H is bonded to S. Why does this change occur?
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A. The H to O bond is nonpolar.
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B. The H to S bond is more polar than the H to O bond.
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C. The H to O bond is more polar than the H to S bond.
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D. The H to S bond is nonpolar.
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7. A + B -> AB What type of reaction is given above?
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A. combination
B. decomposition
C. double displacement n
D. single displacement n
8. According to Hooke's Law, the relationship between B t n n n n n n n n
he elastic force and the distance of stretch for an elastic
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material is
n n
A. inversely proportional. n
B. directly proportional. n
C. exponential.
D. power squared. n
9. A ball rolls off a horizontal table and hits the floor at B a
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faster vertical speed than when it leaves the table. This i
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s an example of which law of objects in motion?
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A. Newton's 1st law n n
B. Newton's 2nd law n n
C. Kepler's 1st law n n
D. Kepler's 2nd law n n
10. The pitch of a car's horn changes as the car ap-
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proaches. This is an example of n n n n n
A. constructive interference. n
B. destructive interference. n
C. diffraction.
D. the Doppler effect. n n
11. A
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EXAM 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIO
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Two identical objects with identical electrostatic char
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ges will n
A. repel one another. n n
B. attract one another. n n
C. have no effect on each other. n n n n n
D. emit a spark. n n
12. The device that converts electric energy to mechani- C
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cal energy by the use of magnetic forces is a (an)
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A. generator.
B. transformer.
C. motor.
D. rectifier.
13. Which phase change releases energy?
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A. melting
B. evaporation
C. condensation
D. sublimation
14. Which of the following contains the greatest amount D
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of thermal energy?
n n
A. burning candle n
B. cup of coffee n n
C. oak tree n
D. lake
15. The input electrical energy of an overhead projector A r
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esults in light emission, heat emission, and mechan-
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ical motion of the fan. This is a demonstration of
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A. conservation of energy. n n
B. excess input energy. n n
C. decrease in entropy. n n
D. total loss of energy. n n n
16. The splitting of the nucleus of U-235 into two or more C
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fragments is called n n
A. alpha decay. n
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EXAM 400 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIO
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B. beta decay. n
C. fission.
D. fusion.
17. Which type of radiation has the lowest energy?
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A. x-rays
B. visible light n
C. infrared
D. radio
18. A security mirror located in the back corner of a
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A
convenience store to enable a view of the entire store u
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ses a n
A. convex mirror. n
B. concave mirror. n
C. flat mirror. n
D. parabolic mirror. n
19. What is the power drawn by a 120-volt microwave
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oven that is rated for 15 amps?
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A. 0.125 joules n
B. 8.0 watts n
C. 1800 watts n
D. 135 joules n
20. According to the theory of plate tectonics, the energy D
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that drives crustal plate movement originates in
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A. earthquakes.
B. lithosphere fluidity. n
C. seafloor spreading. n
D. mantle convection. n
21. The time known as the "coal age" occurred during
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which geologic era? n n
A. Precambrian
B. Cenozoic
C. Mesozoic
D. Paleozoic
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