Question 30
FA student puts some crushed ice at −10 ∘C-10\ ^{\circ}\text{C}−10 ∘C into a beaker.
The student heats the beaker gently and stirs the ice. The student measures the temperature every 30 seconds.
The Figure shows a graph of the results.
Figure
a.[1]
Use the Figure to give the melting point of ice.
b.[1]
Use the Figure to determine the time it takes for all of the ice to melt once it has started melting.
c.[2]
The beaker is heated all the time between 2 minutes and 8 minutes.
Explain why the temperature does not change between 2 minutes and 8 minutes.
d.[1]
Give one reason why the student uses crushed ice instead of large ice cubes.
e.[1]
Give one reason why the student stirs the ice.
14.2 Specific heat capacity and latent heat Questions
110 exam-style questions on Edexcel GCSE Physics 14.2 Specific heat capacity and latent heat, covering 14.2.1 Heating, temperature and changes of state, 14.2.2 Specific heat capacity and specific latent heat, 14.2.3 Specific heat capacity calculation, 14.2.4 Specific latent heat calculation, and 14.2.5 Reducing energy transfer through thermal insulation. Each one has a worked solution and a mark scheme showing where the marks go.