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The presence of impurities in a substance results in a lower melting point due to a process called melting point depression. Melting point depression is the reason why adding salt to frozen streets helps to melt the ice. More »

Graphite has no melting point, and instead turns into gas at 6254 degrees Fahrenheit through the process of sublimation. Graphite is entirely made up of the element carbon. More »

To calculate molar mass by freezing point depression, determine the change in freezing point temperature using the freezing point depression constant, and then evaluate molatility. Once molatility is obtained, use it to ... More »

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Three factors that affect the rate at which ice melts are temperature, pressure, and the presence of impurities. Objects melt when they have reached an appropriate temperature and pressure where they can transition from ... More »

Tungsten has the highest melting point of the pure elements under normal atmospheric pressure, and tantalum hafnium carbide has the highest melting point of any substance. The melting point of tungsten is 3410 degrees Ce... More »

Tungsten, element 74, has the highest melting point of all of the elements on the periodic table. Its melting point is approximately 3,695 Kelvin, or 3,422 degrees Celsius. More »

Sugar does not have a fixed melting point. Instead, as sugar increases in temperature, its molecules began to decompose. While heating sugar does produce a more fluid product known as caramel, it does not retain its chem... More »