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Types of chemical substance

acid

noun

a chemical substance with a pH value (=a measure used in chemistry) of less than 7

agrochemical

noun

a chemical used in farming, for example a fertilizer

alkali

noun

a chemical substance with a pH value (=a measure used in chemistry) of more than 7

base

noun

a chemical substance that turns red litmus paper blue. All alkalis are bases.

carboniferous

adjective

producing or containing carbon or coal

catalyst

noun

a substance that causes a chemical reaction to happen more quickly but is not affected itself. An enzyme is a type of catalyst.

chemical

noun

a substance used in chemistry or produced by a process involving chemistry

chloride

noun

a chemical that consists partly of chlorine, usually with one other element

compound

noun

a chemical substance that consists of two or more elements that together form a molecule. Each different compound has a fixed ratio of elements. For example the water compound (H2O) consists of two hydrogen atoms and one oxygen atom

element

noun

a substance that consists of only one type of atom

enzyme

noun

a natural chemical produced by animal and plant cells that helps reactions and other processes to start

hallucinogen

noun

a substance, especially a drug such as LSD, that causes someone to hallucinate

hydrate

noun

a chemical compound containing water

hydrocarbon

noun

a chemical substance that contains only hydrogen and carbon, for example methane

isotope

noun

one of the forms of a chemical element that have the same atomic number because they have the same number of protons, but have a different number of neutrons, and therefore have a different mass

metalloid

noun

a chemical element such as silicon that is not a metal but that has some of the qualities that a metal has

mixture

noun

a substance consisting of different substances that combine without a chemical reaction

monoxide

noun

a chemical containing one atom of oxygen in each molecule

non-metal

noun

a chemical element that is not a metal, for example carbon or oxygen. Non-metals are solids and gases and are not good conductors of heat and electricity.

oxide

noun

a chemical that consists of oxygen combined with another substance

petrochemical

noun

a chemical made from petroleum or natural gas

polymer

noun

a natural or artificially produced chemical substance consisting of large molecules made of many groups of smaller ones

protease

noun

an enzyme that helps the body to change protein into the substances that it needs

reactant

noun

a substance that reacts with another in a chemical reaction

salt

noun

a chemical substance formed from an acid

silicate

noun

a substance made from silica mixed with another substance

solute

noun

a substance that has dissolved in a solvent and become part of the liquid so that they form a solution

solvent

noun

a liquid that has a solid substance dissolved in it so that it has become part of the liquid

substrate

noun

a substance on which a catalyst or enzyme has a particular effect

sulfate

noun

a salt (=chemical substance) produced from sulfuric acid

sulfide

noun

a mixture of sulfur and another chemical element

toxin

noun

a poisonous substance that causes disease

pre-roll

a video advertisement that appears immediately before an online video

BuzzWord Article

Open Dictionary

breakfast rave

a rave … that takes place early in the morning and where there is no alcohol or drugs …

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