A technician compares three materials used in a laboratory.
| Material at room temperature | State | Separation of particles | Movement of particles |
|---|---|---|---|
| copper | solid | very close together | |
| cooking oil | liquid | close together | move continuously and slide past one another |
| oxygen | gas | move rapidly and randomly in all directions |
Complete the table.
For most substances, the same mass occupies the least volume in one state. Name this state of matter.
Water vapour reaches a cold surface and forms droplets. Name the change of state that has happened.
A sealed vessel contains 64 g of oxygen gas. The oxygen changes into a liquid.
State the mass of liquid oxygen now in the vessel.
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.