In non-tropical countries, the major component of sand is silica, and so the chemical formula for sand is therefore SiO2. In silica, the ratio of the number of silicon atoms to the number of oxygen atoms is 1:2.
In sand, this silica usually exists in the form of quartz. Quartz has a chemical formula of SiO2 and adopts a crystal structure where every silicon atom is attached to four oxygen atoms and every oxygen atom is attached to two silicon atoms. In some countries, sand is also made up of calcium carbonate. The chemical formula for calcium carbonate is CaCO3.Learn More
Bromine is used in everyday products such as pesticides and water treatment solutions. Bromine is a reddish-brown gas that has a pungent smell and can irritate the skin, nose and eyes. Bromine was discovered in 1826 by A.J. Balard.Full Answer >
A pressurized water reactor uses a nuclear reaction to heat water. It then transfers that heat to a steam generator to drive an electric turbine. These reactors use two completely separate water loops to ensure no radioactive water or steam escapes the system. After the steam drives the turbine, it is condensed and flows back into the system, cooling the water in the primary loop, which then cools the reactor.Full Answer >
Lemonade is a mixture because sugar, water and lemons are combined together without a chemical reaction taking place. The bonds of the substances can't combine with one another, instead the three items are mixed up.Full Answer >
Examples of mineral salts include sodium, calcium, ammonium phosphate, potassium, magnesium, chlorine, sulphur and phosphorus. Mineral salts are naturally occurring inorganic substances that are extracted from below the ground surface.Full Answer >