Heating Different Substances

A specific-heat calorimetry lab

Mission: compare heating rates

Give equal masses of water, aluminum, and sand the same heating power. Predict which warms fastest.

Experiment

Heating conditions

Live temperatures same elapsed time

20.0 °Cwater · 4184 J/kg·°C
20.0 °Caluminum · 900
20.0 °Cdry sand · 830
Energy supplied0 kJ
Elapsed model time0 s

Canvas graph key

WaterAluminumSand

The text-free graph on the canvas shows temperature history. A steeper line means faster warming.

Water

4184specific heat
20 °Ctemperature
0rise per second

Camera

What is happening?
With equal power and mass, lower specific heat produces a larger temperature rise. Sand and aluminum warm faster than water.

Teacher tools

Interactive lecture

Step 1 of 100%

Ready. Lecture will not start automatically.

1. Heat transfers energy

What to watch

Watch energy arrows move from the coils into all three samples.

Chapters

Learning objectives

  • Compare temperature rise under equal heating.
  • Relate specific heat, mass, power, and temperature change.
  • Use graph slope to identify faster warming.
  • Explain heat loss and insulation.

Key concepts

Heating transfers energy. For the same supplied energy, a smaller mass or lower specific heat undergoes a larger temperature change. Water’s high specific heat makes its temperature change slowly.

The model uses measured approximate specific heat values near room temperature. Particle motion and time scaling are educational visualizations.

Try these experiments

  • Use equal masses and increase heater power.
  • Select one sample, halve its mass, and compare slopes.
  • Increase insulation and observe later temperatures.
  • Choose equal temperature-rise challenge and compare required power.

Questions for exploration

  • Why does water moderate coastal climates?
  • Why does a metal pan heat faster than the water inside?
  • How does insulation change energy loss?

Real-world applications

Cookware, building insulation, thermal storage, engine cooling, desert temperature swings, and climate are shaped by heat capacity and heat transfer.

Common misconceptions

  • Heat and temperature are not the same quantity.
  • Equal heating does not guarantee equal temperature rise.
  • A substance that warms quickly is not necessarily receiving more energy.

Heating check

0 / 7

Answer each question for instant feedback.