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Item AM052004: When an iron frying pan heats up, the distance between the iron atoms increases, so the pan gets a tiny bit larger.

A cook places an iron frying pan on the stove.  What happens as the iron pan heats up?

  1. The number of iron atoms increases, so the pan gets a tiny bit larger.
  2. The number of iron atoms does not change, so the pan remains the same.
  3. The distance between the iron atoms increases, so the pan gets a tiny bit larger.
  4. The distance between the iron atoms does not change, so the pan remains the same.
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 2899
6–8
n = 1787
9–12
n = 1104
Male
n = 1386
Female
n = 1473
English
n = 2591
Other
n = 276
A. The number of iron atoms increases, so the pan gets a tiny bit larger. 14% 16% 12% 14% 15% 14% 20%
B. The number of iron atoms does not change, so the pan remains the same. 29% 30% 29% 26% 33% 29% 29%
C. The distance between the iron atoms increases, so the pan gets a tiny bit larger. 35% 30% 43% 42% 28% 35% 28%
D. The distance between the iron atoms does not change, so the pan remains the same. 22% 25% 17% 18% 25% 22% 24%