Oct 10, 2025 · A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical …

Nov 11, 2025 · All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds.

Rust is the result of a chemical reaction between metal, typically iron, and oxygen in the presence of moisture. This process, known as oxidation, transforms the metal into a new compound, iron oxide, …

Oct 17, 2025 · A chemical element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all …

Oct 17, 2025 · Much speculation centres around whether BPA is a true endocrine disruptor chemical (EDC) in humans (broadly defined, an EDC is an exogenous substance, one that comes from …

Nov 4, 2025 · The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than …

Phosgene, a colourless, chemically reactive, highly toxic gas having an odour like that of musty hay, used in making organic chemicals, dyestuffs, polycarbonate resins, and isocyanates for making …

Although nature provides us with a staggering amount of natural resources, humankind has also made use of a great variety of man-made compounds and substances. The chemical industry converts raw …

CHEMICAL meaning: 1 : of or relating to chemistry; 2 : working by means of chemicals

Nov 1, 2025 · Chemical composition of the body Chemically, the human body consists mainly of water and of organic compounds —i.e., lipids, proteins, carbohydrates, and nucleic acids.