SC-373
Particle model of matter
Lower Sec Science · Secondary 1 · Medium · Particle model of matter
Some air is trapped in a syringe with its nozzle sealed. The plunger is pulled out, increasing the volume of the air. Using the particle model, which statement best describes the change in the air particles?
- The air particles become further apart but continue moving randomly in all directions.
- The air particles become closer together and stop moving.
- The number of air particles increases to fill the larger space.
- Each air particle becomes larger so that the spacing stays the same.
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