Glyceraldehyde (C₃H₆O₃)

The simplest aldose, an optically active compound.

Sulphuric acid (H₂SO₄)

A colourless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.

Permanganate ion (MnO₄⁻)

Potassium permanganate is used as a disinfectant.

Silver iodide (AgI)

A light yellow compound formed in the reaction of silver nitrate and potassium iodide.

Sodium chloride (NaCl)

Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.

Silver bromide (AgBr)

A white, crystalline compound which breaks down when exposed to light.

Construction of a panel building

Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.

Comparison of halogens

Halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine.

Comparison of hydrogen halides

Atoms within hydrogen halides are bound by covalent bonds, forming polar molecules.

Alanine (C₃H₇NO₂)

A non-polar amino acid. L and D molecules are mirror images of each other.

Grouping of cuboids

This animation demonstrates various types of cuboids through everyday objects.

Cube puzzle

Building cubes shown in several views from the available unit cubes aids spatial vision and other skills.

Early Christian Necropolis, Cella trichora (Pécs, Hungary)

The Early Christian Necropolis in Pécs, Hungary is an outstanding historical site.

Butane (C₄H₁₀)

The fourth member in the homologous series of alkanes.

Lighthouse

Lighthouses are used as an aid to navigation in coastal waters.

Oleic acid (cis-octadec-9-enoic acid) (C₁₇H₃₃COOH)

An unsaturated monocarboxylic acid. The molecule contains double bond in cis orientation.

Sulphur dioxide (SO₂)

Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.

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