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Methane is a chemical compound with the formula CH4, the simplest alkane and the main constituent of natural gas. It has a molar mass of 16.043 g·mol−1 and is an odorless, colorless and transparent gas that is widely used as a fuel and a precursor to many organic compounds.
Learn how polarity is a separation of electric charge in molecules or chemical groups, and how it depends on electronegativity differences. Find out how to classify bonds as polar, nonpolar, or ionic, and how to measure bond dipole moments.
Learn about the possible forms of life that use different elements, solvents, and molecules than carbon, water, and DNA. Explore the examples of alternative biochemistries, such as silicon, ammonia, arsenic, and cosmic necklace-based life.
Dimethyl ether (DME) is the simplest ether and a colorless gas that can be used as a fuel, a solvent, and a precursor to other organic compounds. Learn about its production, properties, applications, and hazards from this comprehensive article.
Learn about the density of water at different temperatures and pressures, as well as other physical and chemical properties of this universal solvent. Find out how water molecules form hydrogen bonds, dissolve salts and acids, and exist in solid, liquid, and gas states.
Cohesion, also called cohesive attraction or cohesive force, is the action or property of like molecules sticking together, being mutually attractive. Learn how cohesion affects phenomena such as surface tension, capillary action and meniscus, and see examples of cohesive substances such as water and mercury.
Hydrocarbons are organic compounds consisting of hydrogen and carbon only. They can be saturated, unsaturated or aromatic, and have various molecular structures and phases. They are widely used as fuels, solvents, polymers and chemicals.
A solvent is a substance that dissolves a solute, resulting in a solution. Learn about the different types of solvents, such as polar and non-polar, protic and aprotic, and how they affect the solubility and reactivity of compounds.