ACT · Science · Science

Evaluation of Models, Inferences & Experimental Results

48 questions from the official practice tests. Page 2 of 2.

Question Science · 15

Practice test 3Multiple choice

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Question Science · 15 — 15. Do the results of the study indicate that the nylon bags successfully prevented the normal pollinators from pollinating the H. metallica flowers? A. Yes; only 20% of the flowers receiving the self-pollination…

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Question Science · 24

Practice test 3Multiple choice

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Question Science · 24 — 24. The statement “For a gas sample at constant pressure, volume increases as temperature increases” is supported by the results of which of the experiments? F. Experiment 1 only G. Experiment 3 only H. Experiments 1…

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Question Science · 28

Practice test 3Multiple choice

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Question Science · 28 — 28. Based on the procedures and results of Experiment 3, at a pressure of 102 kPa, the boiling point of N2 must be: F. less than 279 K. G. between 279 K and 298 K. H. between 298 K and 333 K. J. greater than 333 K.

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Question Science · 36

Practice test 3Multiple choice

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Question Science · 36 — 36. Consider the opinion given by Student 4 concerning the vapor that reached the condenser first. Suppose that enough of that vapor had condensed to form 200.0 mL of liquid. The volume of ethanol, if any, that the…

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Question Science · 37

Practice test 3Multiple choice

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Question Science · 37 — 37. Which of the students indicated that the composition of the vapor formed when the ethanol/water mixture is boiled is different than the composition of the liquid mixture in the DF? A. Student 1 only B. Students 2…

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Question Science · 38

Practice test 3Multiple choice

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Question Science · 38 — 38. Which of the following statements describes a difference between the opinion given by Student 2 and the opinion given by Student 3? Student 2 stated that: F. the vapor that reaches the condenser first will be at…

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Question Science · 39

Practice test 3Multiple choice

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Question Science · 39 — 39. Atmospheric pressure is 1 atm at an altitude of 0 m. Suppose that the distillation described in the passage were carried out at an altitude of 1,000 m. For a distillation at that altitude, which of the following…

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Question Science · 40

Practice test 3Multiple choice

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Question Science · 40 — 40. Benzene, which has a BP of 80.2°C at 1 atm of pressure, forms an azeotrope with H2O. Based on information provided in the passage, the BP of this azeotrope is most likely: F. less than 80.2°C. G. between 80.2°C and…

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Question Science · 1

Practice test 4Multiple choice

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Question Science · 1 — 1. The following table lists the atomic number for each of the 5 heavy metals for which concentrations were determined. Heavy metal Atomic number Lead 82 Cadmium 48 Chromium 24 Nickel 28 Copper 29 A student claimed that…

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Question Science · 2

Practice test 4Multiple choice

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Question Science · 2 — 2. Based on Table 1, for which of the heavy metals was the average concentration higher in cowpea plants grown in polluted soil than in maize plants grown in polluted soil? F. Chromium only G. Chromium and copper only…

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Question Science · 5

Practice test 4Multiple choice

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Question Science · 5 — 5. Suppose the greater the total average concentration of heavy metals in a plant grown in polluted soil, the more effective the plant would have been at mitigating soil pollution. Based on Table 1, which of maize…

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Question Science · 13

Practice test 4Multiple choice

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Question Science · 13 — 13. Consider the PPO activities listed in Table 2 for Polyphenol Q and for Polyphenol T. For which of these polyphenols, if either, did the PPO activity always increase as temperature increased from 10°C through 35°C?…

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Question Science · 14

Practice test 4Multiple choice

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Question Science · 14 — 14. Based on the passage, the chemical reaction catalyzed by PPO is best represented by which of the following expressions? F. o-quinone → polyphenol + O2 G. o-quinone + O2 → polyphenol H. polyphenol → o-quinone + O2 J.…

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Question Science · 21

Practice test 4Multiple choice

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Question Science · 21 — 21. A student predicted that the farther west the location, the later the time that second contact would be observed. Do the results for Locations 2, 3, and 4 support this prediction? A. Yes, because Location 4 was…

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Question Science · 29

Practice test 4Multiple choice

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Question Science · 29 — 29. Students 3 and 4 would agree on which of the following statements regarding either Reaction 1 or Reaction 2? A. Reaction 1 can occur. B. Reaction 1 cannot occur. C. Reaction 2 can occur. D. Reaction 2 cannot occur.

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Question Science · 30

Practice test 4Multiple choice

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Question Science · 30 — 30. Based on Student 1’s description of conservation, which of the following equations best represents the conservation of mass number for Reaction 2? F. 1 + 1 = 2 G. 1 + 1 = 2 + 0 H. 2 + 2 = 4 J. 2 + 3 = 4 + 1

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Question Science · 34

Practice test 4Multiple choice

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Question Science · 34 — 34. Which of the following fusion reactions can occur according to Student 1 but cannot occur according to Student 2? F. 1 2 H + 1 2 H → 2 3 He + 0 1 n G. 1 2 H + 1 2 H → 2 4 He + 0 1 n H. 1 2 H + 2 3 He → 2 4 He + 1 1…

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Question Science · 39

Practice test 4Multiple choice

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Question Science · 39 — 39. A scientist made 2 predictions: on average, the NJ for Group 1 would be greater than that for Group 2, and 80% of the snails in Group 1 would jump at least once. Are both of these predictions supported by the…

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