Particle Diagrams
Chemistry: Cambridge International A Level, topic 1.4.4
Particle Diagrams
The arrangement of particles in a certain phase can be represented by a diagram. These show simplified particles to illustrate principles.
Solid phase
- Crystalline solids have a regular, ordered, repeating pattern which forms a solid lattice.
- Amorphous solids have a disrupted arrangement but particles are closely associated and hold their shape.
Liquid phase
- Particles are closely associated but do not form a regular lattice.
- Particles are free to fill and match the shape of the container.
Gas Phase
- Particles are much more spread out.
- Particles are very far apart and do not have strong associations.
- Volume is determined largely by the temperature, pressure or container.
Test yourself on Particle Diagrams
What phase is being decribed below?
"Particles are closely associated but do not form a regular lattice and are free to fill and match the shape of the container."Which of the following about solids are correct?