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what is the melting point of lead?
The melting point of a solid is the temperature at which the atoms in a solid begin to vibrate so vigorously that the atoms’ vibrational motion disrupts their neighbors’ attractive forces. As a result, the solid changes into a liquid.
Lead has a low melting point, making it ideal for casting into shapes of your choosing. However, this can be dangerous if you don’t use proper safety gear and tools. It’s also highly toxic, so be sure to keep children out of the area.
Tin and lead have lower melting points than tin-lead solder, so this experiment is an excellent opportunity to compare the melting points of these two metal alloys. Students can also use this to see how the order of melting and solidifying varies among different metals.
Experiment 1. Heat samples of tin, lead and tin-lead solder to compare their melting points.
Students may heat a sample of each metal alone, and then mix them with a small amount of another alloy. This can be done conveniently by groups of two, and will take about 30 minutes.
The melting point is important for many applications, as it determines the maximum temperature at which a metal can melt and become a liquid. If a component of a device melts, it can no longer function properly. This is one reason that many components are designed with a specific melting temperature in mind.