Tag Archives: crystalline
Who Discovered Salt?
Salt is a white, pink or grey crystalline mineral which a small amount of it is necessary for human and it is harmful in large amounts, salt is a compound of two elements sodium and chloride and each of them has an important role for human’s health. Salt is available in the seas in its … Continue reading
Who Discovered Glass?
Glass is a non-crystalline solid substance, the glass is a fragile and transparent material. We can find natural glass as quartz after the lightning hits the sand. Artificial glass is made mainly from the silica which is a chemical compound of silicon and oxygen, it reaches to 70% to 74% of the glass manufactured. Also … Continue reading