sulfur dioxide also sulphur dioxide in british english is the chemical compound with the formula s o 2.it is a toxic gas responsible for the smell of burnt matches.it is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning of fossil fuels contaminated with sulfur compounds.
iodine is the fourth halogen, being a member of group 17 in the periodic table, below fluorine, chlorine, and bromine; it is the heaviest stable member of its group the scarce and fugitive fifth halogen, the radioactive astatine, is not well-studied due to its expense and inaccessibility in large quantities, but appears to show various unusual properties due to relativistic effects .
gunpowder, also known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. it consists of a mixture of sulfur s , charcoal c , and potassium nitrate saltpeter, kno 3 . the sulfur and charcoal act as fuels while the saltpeter is an oxidizer.
lead ii oxide gives a mixed oxide on further oxidation, pb 3 o 4. it is described as lead ii,iv oxide, or structurally 2pbo·pbo 2, and is the best-known mixed valence lead compound. lead dioxide is a strong oxidizing agent, capable of oxidizing hydrochloric acid to chlorine gas.
lead paint or lead-based paint is paint containing lead.as pigment, lead ii chromate pb cr o 4, 'chrome yellow' , lead ii,iv oxide, pb 3 o 4, 'red lead' , and lead ii carbonate pb c o 3, 'white lead' are the most common forms. lead is added to paint to accelerate drying, increase durability, maintain a fresh appearance, and resist moisture that causes corrosion.
a crystal or crystalline solid is a solid material whose constituents such as atoms, molecules, or ions are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. in addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations.
phosphorus is a chemical element with the symbol p and atomic number 15. elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on earth.it has a concentration in the earth's crust of about one gram per kilogram compare copper at about 0.06 grams .
copper toxicity is a type of metal poisoning caused by an excess of copper in the body. copperiedus can occur from eating acidic foods cooked in uncoated copper cookware, or from exposure to excess copper in drinking water or other environmental sources.