A sealed metal cylinder contains argon gas under pressure.
The temperature of the cylinder and the argon gas increases.
Which statement describes what happens to the pressure in the cylinder and gives the correct reason why the pressure changes?
The pressure decreases because the argon particles move more slowly.
The pressure decreases because the argon particles move faster.
The pressure increases because the argon particles move more slowly.
The pressure increases because the argon particles move faster.
126 exam-style questions on CIE IGCSE Physics 2.1.3a The absolute scale of temperature. Each one has a worked solution and a mark scheme showing where the marks go.