Describe solids, liquids and gases in terms of particle arrangement and movement.

Describe solids, liquids and gases in terms of particle arrangement and movement. Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. In Changes of state, this means gas pressure comes from particle collisions with container walls. The answer should use the approved wording from Changes of state and the particle model, include solid, gas, liquid, and avoid drifting into another section of Particle model of matter. For revision, practise saying the exact objective aloud, then add the one calculation, particle movement, collision, graph, or practical detail that makes the statement true. A strong exam response for checkpoint 17 is specific to describe solids, liquids and gases in terms of particle arrangement and movement and does not reuse a generic explanation from a neighbouring objective.