drier source it is widely used to dry electronic goods. other : silica used in silicon chips and solar cells. physical properties of silica boiling point : ã'â°c, k, ã'â°f solubility in water : g l- melting point : ã'â°c, k, - ã'â°f density : g\cm molar mass : g mol- chemical composition chemically...
mineral powder). some specimens of hematite will produce a brilliant red streak, others will produce a reddish brown streak. care is needed when testing a specimen of hematite with a metallic luster. these specimens are often brittle and leave a trail of debris along with the streak. that debris is not...