crystalisation問題一問

白膠漿乾左唔算 crystalisation. If 算 crystalisation, when you add solvent once again (water or thinner天那水), the solid will dissolve. But in fact, once the 白膠漿乾左, it doesn't dissolve in solvent again.
白膠漿乾左其實係 bond formation / polymerization / chemical reaction. Due to oxidation or photchemical reaction, the small molecules dissolved in the 白膠漿 solvent join together and become bigger molecules by forming covalent bonds. The bigger molecules are the 白膠漿乾左 solid left behind.