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the temperature at which a substance changes phase from a liquid to a gas at a specific or fixed pressure (STP). The pressure of the evaporated particles is equal to the atmospheric pressure at that point.
compounds of aluminium oxide and silicon oxide that form an open lattice structure. They are...
states that the p, d and f orbitals can only take on a second electron when all the equivalent...
the arrangement of electrons in the different orbitals in an atom.
the part of the Earth's hydrosphere that is made of frozen water.