Steels are alloys that have iron content ranging from more than 99 percent to less than 60 percent, with carbon and other metallic elements to harden the alloys or give them other properties. Iron by itself is relatively soft and prone to rusting. Steel is hard and corrosion-resistant.Know More
Alloy steels have a little carbon but mainly have other metals to give them various properties, such as strength from nickel, corrosion resistance from chromium, toughness from vanadium, hardness from manganese, improved wear from molybdenum and high-temperature strength from tungsten.
Other types are carbon steel with 1 to 2 percent carbon, the most widely used; galvanized steel, which is zinc-coated; electroplated steel coated with tin in a process using electrical current; tool steel made under high temperatures and cooled quickly to make it hard; and the ancient Damascus steel of very high quality.Learn more about Chemistry
Often misused or misunderstood, most basically a phosphate is a polyatomic ion with the molecular formula O4P-3; what this means in terms of chemical composition is that a central phosphorus atom is surrounded by 4 oxygen atoms in a tetrahedral pattern, while the phosphate ion carries a negative 3 charge.Full Answer >
Banana peels are chemically composed of potassium, phosphorus, calcium, manganese, sodium, magnesium and sulfur. Potassium is by far the most common element, composing as much as 42 percent of dried banana peels.Full Answer >
Chalk is calcium carbonate and has the same chemical composition as limestone, marble, ground calcium carbonate and precipitated calcium carbonate. Chalk, like the other types of calcium carbonate, is in the form of calcite, which is a crystal.Full Answer >
Rat poison is composed of chemicals such diphacinone, bromadiolone and warfarin — all anticoagulants that cause internal bleeding. Highly toxic metal phosphides are also a common ingredient.Full Answer >