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Changes of State: Concept Map

≈ 25 min
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Concept Map

Organise the vocabulary, quantities and relationships into a connected model.

This extension applies that lens specifically to Changes of State.

Each change of state has a name and a direction:

  • Melting (solid → liquid) and freezing (liquid → solid) happen at the melting point.
  • Evaporation / boiling (liquid → gas) and condensation (gas → liquid) happen at the boiling point.
  • Sublimation (solid → gas directly) — e.g. dry ice, CO2\text{CO}_2.

Melting and boiling absorb energy (particles need energy to break apart); freezing and condensation release energy. For pure water at sea level, the melting point is 0 ∘C0\,^\circ\text{C} and the boiling point is 100 ∘C100\,^\circ\text{C}.

Chemistry — Grade 10 — Concept Map: Steam hitting a cold window and turning into water droplets is called…

Chemistry — Grade 10 — Concept Map: Which change of state releases energy to the surroundings?

Chemistry — Grade 10 — Concept Map: At sea level, what is the boiling point of pure water in ∘C^\circ\text{C}?

Name the original topic being extended by this concept map lesson.

Which statement is the best evidence-led starting point for Changes of State: Concept Map?