LET’S TRY ONE
Model S has particles close together, vibrating around fixed positions. Which behavior best matches this solid model?
It keeps a definite shape.
Fixed relative positions explain the definite shape; vibration is still motion.
Learning steps & teaching tips
Connect a stated particle model with shape, volume and diffusion observations.
- Read the particle arrangement or motion given.
- Connect that model with shape or spreading.
- Check which claim goes beyond the stated model.
Try it together
Use counters to model close fixed positions, close sliding positions and widely spaced motion. Explain one useful feature and one limitation of the model.
Use the particle arrangement described; a model represents behavior without being a picture of every particle.