Phases of Matter Interactive Simulation

Matter exists as a solid, liquid, or gas depending on temperature. For water: below 0 °C the molecules are locked in a crystal lattice (ice); between 0 and 100 °C they flow freely (liquid water); at 100 °C and above they escape into the air (steam). These transitions are melting (solid → liquid) and boiling (liquid → gas), and their reverses are freezing and condensation. Students can change temperature and compare what happens. Use it for chemistry inquiry with Grades 2–5 and Middle School on a projector or student device.

استانداردها: NGSS MS-PS1-4

• Why ice melts at exactly 0 °C and water boils at 100 °C
• How particle energy changes at each phase transition
• Why a gas expands to fill its container but a solid keeps its shape
• What 'sublimation' means (solid → gas without passing through liquid)

1. 1Predict how changing temperature will affect the visible outcome, then test the prediction.
2. 2Use evidence from the interactive visual to explain the result.

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