Bromine is an element. At room temperature, bromine is a dark red liquid.
Complete the sentences about the particles in liquid bromine.
Use words from the list: apart, around, energy, fixed, random, touching
The particles in liquid bromine are close together and ...... each other. The particles are arranged in a ...... way. The particles can move ...... each other.
The table shows some changes of state.
| Change | Name of change of state |
|---|---|
| liquid bromine turns into bromine gas | ? |
| liquid bromine turns into solid bromine | ? |
| bromine gas turns into liquid bromine | ? |
Complete the table.
A small amount of liquid bromine is put in a sealed gas jar. After some time, the whole jar is filled with brown bromine gas.
Explain why the bromine gas fills the whole jar. Use ideas about particles.
Bromine gas can be squashed into a smaller volume. Liquid bromine cannot.
Explain why. Use ideas about the spaces between particles.
48 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.