States of Matter
by Anonymous
Watch the particle arrangement and heating curve to see why the temperature pauses at 0 and 100 °C while the number of particles and the mass stay the same.
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About this app
States of Matter is an interactive middle school science activity about how particle arrangement changes between solids, liquids, and gases. Students explore a particle model, heat ice while following a temperature curve, and predict how mass and volume change during freezing and boiling. The app emphasizes that particle count remains constant during a state change and that mass is conserved in a closed container.
Use cases
- Middle school students learning states of matter
- Science teachers introducing particle models
- Classroom practice on heating curves
- Review of mass conservation during phase changes
Features
- Compare particle arrangements in solids, liquids, and gases
- Explore shape, volume, particle spacing, and a fixed set of 12 particles
- Add heat one step at a time or five steps at once while viewing the temperature curve
- Identify temperature plateaus at 0°C and 100°C during melting and boiling
- Predict mass changes in closed and open containers and volume change when water freezes