Log In | Register

Item AM052005: When an iron frying pan cools, the distance between the iron atoms decreases.

After cooking breakfast, a cook places a hot iron frying pan on the counter to cool. What happens as the iron pan cools?

  1. The iron atoms increase in size.
  2. The iron atoms decrease in mass.
  3. The number of iron atoms increases.
  4. The distance between iron atoms decreases.
Distribution of Responses
Chart showing distrubtion of responses for Item AM052005
Students Responding Correctly
Group Correct Total Percent
Overall 1450 2878 50%
  6–8 804 1775 45%
  9–12 643 1095 59%
Primary Language

View data table

NGSS does not address thermal expansion or contraction of matter.