Colourless, odourless, lighter-than-air gas. The most common chemical element in the universe.
Member of the cycloalkane homologous series.
A colourless gas with a pungent odour, its solution in water is called hydrochloric acid.
A white, waxy substance, a carboxylic acid of high carbon number.
The monomer of polypropylene.
The fifth member in the alkane homologous series. A colourless, combustible liquid.
Clothing reflects the lifestyle and culture of the region's inhabitants.
One of the isomers of pentene.
The simplest representative of ketones.
A compound ion generated when a proton is added to an ammonia molecule.
The monomer of PVC.
One of the raw materials of traditional photography.
A compound ion formed when a phosphoric acid molecule releases a proton.
The simplest peptide, formed from two glycine molecules by a peptide bond.
A triol that is often used as an ingredient of creams and ointments.
Build 3D shapes from unit cubes with the help of several views.
The second member in the homologous series of straight-chain alkanes.
A compound ion produced when sulphuric acid releases protons.
A colourless, heavier-than-air gas. Its geometric isomer is cis-2-butene.
A compound ion, the main source of nitrogen for plants.