i have been told magnesium oxide. i know that i want to know what is the powder because magnesium oxide is a gasWhat powder is left when magnesium is burnt?
Magnesium oxide, or magnesia, is a white solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO. It is formed by an ionic bond between one magnesium and one oxygen atom. Magnesium oxide is easily made by burning magnesium ribbon which oxidizes in a bright white light, resulting in a powder. It is hygroscopic in nature and care must be taken to protect it from moisture. Magnesium hydroxide forms in the presence of water (MgO + H2O 鈫?Mg(OH)2), but it can be reversed by heating it to separate moisture.
The crystal structure of MgO matches the crystal structure of NaCl.[2]
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