A chemical property is a characteristic associated with a substance or reaction that is observable as it chemically changes or transforms into another substance. This chemical change produces a product that has a differe... More »

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Oxygen gas is free from odor, taste and color, combines with the majority of other elements, supports combustion, is very paramagnetic and has a pale blue color in both its solid and liquid forms. Oxygen is also a part o... More »

Hydrogen has several chemical properties; the molecular weight is 2.01594 grams and the relative density compared to air is 0.0695. Hydrogen's solubility in organic solvents is greater than it is in water. Hydrogen is mo... More »

A chemical reaction is the process that changes one set of chemicals into another. Chemical reactions rearrange the atoms of the reactants to form different substances or products. More »

Oxides that act as acids as well as bases in a chemical reaction are called amphoteric oxides. Many metallic oxides exhibit properties of both acids and bases. Oxides of metals are able to receive or donate a proton or H... More »

Zinc does not rust, as rust is caused by a chemical reaction between iron and oxygen. This reaction produces ferric oxide and ferric hydroxide on the surface of the metal. Only iron and its alloys are capable of rusting. More »

The atomic theory formulated by the British chemist John Dalton proposes that atoms are indivisible particles comprising all matter; atoms of the same element share identical properties, including shape, size and mass; a... More »