They do not normally. Their chemical formula is SiO2 (silicon dioxide).
However, the different colours of quartz follow when there are impurities in the mineral, and so carbon could be an impurity which can cause a certain colour of quartz.
No. A silicate is a compound containing silicon, oxygen and something else.Graphite is pure carbon. Black and slippery, it is one of the allotropes of carbon, along with amorphous carbon and diamond.
In pure form, limestone is calcium carbonate, and does not contain silica. However, in SOME strata of limestone, silica can be present as an impurity.
no, calcium does not contain carbon, making it inorganic
Common things that contain carbon include living organisms (plants, animals), fossil fuels (coal, oil, natural gas), organic matter (wood, paper), carbon dioxide (in the atmosphere and dissolved in water), and synthetic materials (plastics, rubber).
yes
It is inorganic (does not contain carbon).
No. A silicate is a compound containing silicon, oxygen and something else.Graphite is pure carbon. Black and slippery, it is one of the allotropes of carbon, along with amorphous carbon and diamond.
Yes, which is why it reacts so little with the human body.
Cheese should not (and does not normally) contain silica.
Salt does not contain silica.
Calcite does not contain any silica. It is a carbonate mineral.
Yes. Generally sand is mostly silica.
No, silica dioxide (silicon dioxide) is not organic. Quartz is a mineral composed of silicon and oxygen atoms in a crystal structure and is not classified as organic because it does not contain carbon-hydrogen bonds.
Foods that contain silica are cucumbers and melons. These help skin, eyes, nails and hair remain healthy.
Yes. Silica is the primary component of most types of glass.
No, silica is not an organic compound. It is a chemical compound that is composed of silicon and oxygen atoms. Organic compounds, on the other hand, are compounds that contain carbon atoms bonded to hydrogen atoms.
No