LETÖLTHETÕ IGE ÉS MELLÉKNÉV VONZATTÁR

The History of Chemistry - an extraordinary journey! ... Cheap glass is often referred to as soda glass. It contains sand (silica - SiO2), lime (CaO) and baking soda (Na2CO3). It can be brittle and it has a low melting point. As the silica content increases, so does the quality of the glass. Crystal glass has lead oxide added to it. Robert Boyle. Name: Robert Boyle Birth/Death: 1627 - 1691 ... ................
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