Physics 0625 · IGCSE · Kinetic particle model of matter
Kinetic particle model of matter — practice question
A liquid-in-glass thermometer is inserted into some ice made from pure water. The ice is heated, so it melts into water and then becomes steam.
The graph in Fig. 6.1 shows how the temperature changes with time. The temperature readings are missing from the y-axis.
(a)[2]
On Fig. 6.1, propose a temperature value for each of the three marked positions on the y-axis. Enter one value in each box.
(b(i))[2]
For section X, identify the process taking place and explain what is happening to the molecules.
(b(ii))[2]
For section Y, state the name of the process and explain what is happening to the molecules.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Both $0$ and $100$ have been labelled correctly.” …