A plastic bottle is completely filled with 500 g of water. The cap is screwed on and the bottle is put in a freezer.
When all the water has frozen, the bottle has split open.
The density of liquid water is 1.00 g/cm3. The density of ice is 0.92 g/cm3.
Calculate the volume of the ice formed.
Explain why the bottle splits.
Explain, in terms of particles, why ice is less dense than liquid water.
A student says:
'The water must make extra particles when it freezes, because the ice takes up more space.'
Explain why the student is wrong.
87 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.