Which Metal is the Best Heat Conductor?

Next Generation Science

This educational science video demonstrates a clear, comparative experiment to investigate the thermal conductivity of five different metals: steel, brass, nickel, aluminum, and copper. Using a specialized star-shaped apparatus with metal rods of equal length and thickness, the video visualizes heat transfer by observing how quickly heat travels from a central flame to the tips of the rods, melting the wax holding birthday candles in place. The experimental setup introduces key scientific concepts such as controlled variables (same thickness and length of rods) and dependent variables (time taken for the candle to fall). It visually ranks the metals based on their ability to conduct heat, showing students that while all the materials are metals, their physical properties regarding heat transfer vary significantly. For educators, this video serves as an excellent "virtual lab" or demonstration for units on thermodynamics, properties of matter, or energy transfer. It allows students to observe a process that is often invisible (heat conduction) and provides a concrete, memorable example of conduction rates. The clear, paced nature of the experiment makes it perfect for practicing prediction, observation, and data recording skills in the classroom.