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2. Smelting - Wikipedia

   en.wikipedia.org/wiki/Smelting

   Smelting involves more than just melting the metal out of its ore. Most ores are the chemical compound of the metal and other elements, such as oxygen (as an oxide), sulfur (as a sulfide), or carbon and oxygen together (as a carbonate). To extract the metal, workers must make these compounds undergo a chemical reaction.

3. Water-reactive substances - Wikipedia

   en.wikipedia.org/wiki/Water-reactive_substances

   The alkaline earth metals (Be, Mg, Ca, Sr, Ba, and Ra) are the second most reactive metals in the periodic table, and, like the Group 1 metals, have increasing reactivity with increasing numbers of energy levels. Beryllium (Be) is the only alkaline earth metal that does not react with water or steam, even if the metal is heated red hot. [9]

4. Melting - Wikipedia

   en.wikipedia.org/wiki/Melting

   Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure , which increases the substance's temperature to the melting point .

5. Thermite - Wikipedia

   en.wikipedia.org/wiki/Thermite

   Its relatively low melting point (660 °C) means that it is easy to melt the metal, so that the reaction can occur mainly in the liquid phase, thus it proceeds fairly quickly. Its high boiling point (2519 °C) enables the reaction to reach very high temperatures, since several processes tend to limit the maximum temperature to just below the ...

6. Refining (metallurgy) - Wikipedia

   en.wikipedia.org/wiki/Refining_(metallurgy)

   In one of the previous melting stages, lead was added. Gold and silver preferentially dissolved in this, thus providing a means of recovering these precious metals. To produce purer copper suitable for making copper plates or hollow-ware, further melting processes were undertaken, using charcoal as fuel. The repeated application of such fire ...

7. Molybdomancy - Wikipedia

   en.wikipedia.org/wiki/Molybdomancy

   A piece of molten lead after immersion in cold water. Molybdomancy (from Ancient Greek: μόλυβδος, romanized: molybdos, lit. 'lead' [1] and -mancy) is a technique of divination using molten metal. Typically, molten lead or tin is dropped into water.

8. Why salt melts ice — and how to use it on your sidewalk - AOL

   www.aol.com/news/chemists-told-us-why-salt...

   Ice has a semi-liquid surface layer; When you mix salt onto that layer, it slowly lowers its melting point.. The more surface area salt can cover, the better the chances for melting ice.. Ice ...

9. Melting point - Wikipedia

   en.wikipedia.org/wiki/Melting_point

   The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.