Heat and temperature

Heat and cold

Order the objects from coldest to hottest, which one is at room temperature?

Temperature Scales

Conversion between degrees Celsius, Fahrenheit and Kelvin. What is the lowest temperature that can be reached in degrees Celsius?

Calibration of a thermometer

Steps to calibrate a thermometer in degrees Celsius using the phase changes of water.

Heat transfer

Energy Forms and Changes

Explore how cooling or heating iron, brick, water, and olive oil increases or decreases energy. See how energy is transferred between objects. Build your own system, with sources, changes, and uses of energy. Track and visualize how energy flows and changes through your system.


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General chemistry


General Chemistry I: Atoms, Molecules, and Bonding


Big Bang and the Origin of Chemical Elements




Energy and Thermodynamics


Entropy and Equilibria


AP® Physics 2 – Part 1: Fluids and Thermodynamics


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