Lub ntsiab ntawm cov khoom siv ci ntsa iab
Silicon dioxide (tshuaj formula: SiO2) yog acidic oxide thiab cov hydrate sib xyaw yog silicic acid (H2SiO3). Nws tau raug hu los ntawm lub sij hawm ancient. Silicon dioxide yog feem ntau pom muaj nyob rau hauv qhov nyob rau hauv quartz, zoo li nyob rau hauv ntau yam kab mob. Silica yog lub ntsiab ntawm cov xuab zeb nyob rau ntau qhov chaw ntawm lub ntiaj teb. Silicon dioxide yog ib yam ntawm cov khoom siv ntau thiab ntau tshaj, uas yog ob hom minerals thiab synthetically produced. Cov piv txwv tseem ceeb muaj xws li fused silica, cov nplais, fumed silica, silica gel thiab aerogels. Daim ntaub ntawv siv los ntawm cov khoom siv rau lub tshuab ua rau cov khoom siv hauv cov khoom noj khoom haus.
Silicon dioxide yog qhov tseem ceeb ntawm kev sib xyaw ntawm silicon. Lub ntuj silica tam sim no nyob rau hauv lub ntiaj teb occupies txog 12% ntawm qhov loj ntawm lub ntiaj teb lub crust, thiab nws cov ntaub ntawv cov ntaub ntawv yog crystalline thiab amorphous, thiab collectively hu ua silica.