Changes of state

EasyMediumHard
1234567891011121314151617181920
Question 9
Easy

A student heats a substance steadily from a solid to a gas. The temperature change is recorded on the graph below.

A heating curve with Temperature on the vertical axis and Time on the horizontal axis. From the origin, an unlabeled line rises to a first horizontal plateau labeled W. From the end of W, a slanted line labeled X rises to a second horizontal plateau labeled Y. From the end of Y, a slanted line labeled Z rises towards the top right.

Which section of the graph represents the melting of the substance, where the specific latent heat of fusion is used to calculate the energy needed for this change of state?

[2]

Changes of state Questions

  1. GCSE
  2. /Physics
  3. /Changes of state