Liquid T is sealed in a cylinder fitted with a piston, and the piston is pushed in with a fixed force. The test is repeated with the same volume of gaseous T. The volume of the liquid hardly changes, but the volume of the gas decreases greatly.
Why is liquid T much harder to compress than gaseous T?
The particles of gaseous T shrink to a smaller size when the force is applied to them.
The particles of liquid T are already touching, with almost no space between them.
The gaps between the particles of liquid T are filled with air that holds them apart.
The particles of liquid T are held in a fixed, regular pattern by strong attractions.
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.