Formamide (methanamide) (HCONH₂)

A colourless, slightly viscous, hygroscopic liquid used in the production of formic acid, hydrogen cyanide and other organic compounds.

D-ribose (C₅H₁₀O₅)

The open-chain version of ribose, which occurs naturally in nucleic acids, coenzymes, nucleotides and nucleosides.

Clothing (Western Europe, 18th century)

Clothing reflects the lifestyle and culture of the region's inhabitants.

Silver nitrate (AgNO₃)

One of the raw materials of traditional photography.

Phosphate ion (PO₄³⁻)

A compound ion formed when a phosphoric acid molecule releases a proton.

Styrene (vinyl benzene) (C₈H₈)

A colourless liquid with an odour similar to benzene. The monomer of polystyrene.

Hydrogen (H₂)

Colourless, odourless, lighter-than-air gas. The most common chemical element in the universe.

Molecule exercise V (Oxo compounds)

An exercise about the groups and structure of oxo compounds.

Tennis court

Tennis is played on a court covered with grass, clay or synthetic material.

Pentane (C₅H₁₂)

The fifth member in the alkane homologous series. A colourless, combustible liquid.

Hydrogen chloride (HCl)

A colourless gas with a pungent odour, its solution in water is called hydrochloric acid.

Palmitic acid (hexadecanoic acid) (C₁₅H₃₁COOH)

A white, waxy substance, a carboxylic acid of high carbon number.

Ozone (O₃)

An allotrope of oxygen, consisting of 3 oxygen atoms.

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