physics states of matter, changes of state

2

solid - describe particle bonds etc

• particles are closely packed together and held in fixed positions by strong intermolecular forces

• these maintain a definite shape and volume

• these particles vibrate but do not move freely, allowing solids to maintain their structure.

liquid - describe particle bonds etc

• particles are closely packed but can slide past one another, allowing them to flow and take the shape of their container.

• intermolecular forces are weaker than in solids, resulting in a definite volume but no shape.

gas - describe particle bonds etc

• particles are far apart and move freely, resulting in no definite shape or volume.

• intermolecular forces are almost non existent, allowing gases to fill their container.

describe how the particles arrangement changes in different states

• particles of a substance stay the SAME

• only their arrangement and energy is different depending on the state (solid, liquid, gas).

condensing

GAS - LIQUID

sublimating

SOLID - GAS

evaporating

LIQUID - GAS