This is an excellent example (along with aluminum) of a material that is limited far more by how much energy is needed to make the substance usable ( embodied energy) than the abundance on the planet. The extraction of silicon from silicon dioxide is extremely energy intensive it requires 1000-1500 megajoules of primary energy per kilogram to process high-grade silicon for computer chips or solar panels. Silicon is found in nature in the form of silicon dioxide (like some types of sand and many rocks). Some properties of silicon include: Atomic weight It is also combined frequently with other elements to produce a number of useful products. Silicon is used primarily in its solid form. As well, silicon is used extensively in the energy sector as the primary component of solar panels and photovoltaic cells. Silicon is used extensively in electronics because of its semiconducting properties. Special techniques are able to make silicon that is 99.9999% pure Si-28. Silicon can get quite pure, and even different isotopes can get quite pure. Pure silicon is produced by heating silicon dioxide with carbon at temperatures approaching 2200☌. This compound is the most abundant compound in the Earth's crust, and it takes the form of ordinary sand, quartz, rock crystal, amethyst, agate, flint, jasper, and opal. ![]() ![]() The most common compound of silicon is silicon dioxide, or SiO 2. In the Earth's crust, silicon is the second most abundant element. Silicon is the seventh most abundant element in the universe, and it is very common on Earth. Silicon ( Si) is the 14th element on the periodic table. Silicon, atomic number of 14 and atomic weight of 28.0855.
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