incorrectly displays an inverse relationship between L and ΔV.
5 . A The incubation temperature in Study 2 was held constant at 80°C. Compare the value of ΔV
in Table 3 at 80°C to the values in Table 2. In Study 3, ΔV was 10.2 mm^3 at 80°C, which
corresponds to Metal Z in Table 2.
6 . H Refer to Tables 1 and 2. The greatest thermal expansion, ΔV, occurs when L is 200 mm and
when β is 4.6 °C−1, (H).
Passage VI
1 . B Examine Figure 2. At the end of 12 weeks, the PBr concentration for H2 has decreased from
500 mg/L to 100 mg/L. 100 out of 500 is 20%, as in (B).
2 . G In Figure 1, find the difference in PBr concentration between S1 and U1 after 5 weeks.
Choices (H) and (J) do not reflect the actual amount of U1 after 5 weeks instead of the
difference. Choice (F) reverses the relationship between U1 and S1.
3 . C According to Figure 1, as number of weeks increases, the concentration of PBr decreases for
all three soil samples. In Figure 3, as number of weeks increases, the propargyl alcohol
concentration in S1 also increases. Choice (D) expresses the relationship in H1 instead of
S1.
4 . F Look at Figure 1. The unamended soil sample refers to U1, which has the lowest
concentration. The statement is therefore supported, so eliminate (H) and (J). You can also
safely eliminate (G) because the explanation does not match the information in Figure 1.
Choice (F) is the correct answer.
5 . D This question is asking you to explain the similarity in concentration between H2, S2, and U2
in Figure 2. Since all three soil samples differed greatly in steer manure content, according to
the passage, the bacterial count should also vary. This means that bacterial decomposition
does not play a significant role in the PBr concentration in the soil, which is (D). Choice (C)
is the opposite of (D), and (A) and (B) incorrectly mention propargyl alcohol.
Passage VII
1 . B “Freezing point” does not appear on any of the figures, so you’ll need a bit of outside
knowledge here. Think about it this way: The freezing point is the point at which a substance
turns from a liquid into a solid. The melting point is the point at which a substance turns from
a solid into a liquid. Therefore, freezing point and melting point are one and the same. Use
