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🌡️ Reading Heating Curves

Read slopes and plateaus on a heating curve, then connect phase changes with pressure, latent heat, and energy equations.

2
lessons
~12 min
to learn
🔬 Science
subject
Adults
level
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What you’ll learn

  1. Read a Heating CurveInterpret slopes, plateaus, axes, and phase labels on a heating curve.Use the graph's shape and axes to distinguish warming within one phase from a transition between phases.
  2. Track Phase-Change EnergyChoose and combine energy equations for temperature changes and phase changes.Connect pressure and latent heat to phase transitions, then solve a multi-segment heating problem one term at a time.

Questions this course answers

What does a flat heating-curve segment show?

Energy changes the phase while temperature stays nearly constant.

What does Q=mc delta T describe?

It models sensible heating or cooling within one phase.

What changes boiling temperature?

A liquid boils when its vapor pressure matches the surrounding pressure.

What does Q=mL describe?

Latent heat is energy per mass for a phase transition.

Which equation belongs on a sloped heating-curve segment?

A slope represents a temperature change within one phase.

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