Physics 0625 · IGCSE · Kinetic particle model of matter
Kinetic particle model of matter — practice question
Matter exists in three states: solid, liquid and gas.
(a)[3]
Describe how the molecules are arranged in each state of matter.
(b(i))[1]
State the name of the process that makes the liquid disappear.
(b(ii))[3]
The process in (b)(i) leads to cooling. Explain why the cooling happens. Use your ideas about molecules.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “solid: molecules tightly packed OR in fixed positions OR only able to vibrate” …