Question 39
FThe graph shows a pure substance heated steadily from the solid state at constant pressure. No chemical change occurs.
What is happening at point P?
A
The substance is melting; particles are leaving fixed positions while remaining close together
B
The substance is boiling; particles are becoming widely separated
C
The solid particles are becoming larger while staying in the same arrangement
D
The substance has completely melted and its temperature is increasing
1.1 The particle model Questions
93 exam-style questions on OCR GCSE Chemistry 1.1 The particle model, covering 1.1.1 The particle model and changes of state and 1.1.2 Limitations of the particle model. Each one has a worked solution and a mark scheme showing where the marks go.