Silver iodide (AgI)

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

Proline

One of the 20 amino acids that make up proteins. Its amino group and the 3rd carbon atom...

Sodium chloride (NaCl)

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

Silver bromide (AgBr)

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

Fortress of Szigliget (17th century, Hungary)

The fortress was a member of the chain of fortifications built to protect against the...

Tactics of the Hungarian raiders (9th-10th centuries)

The tactics of the Hungarian light cavalry included pretending to retreat, tempting their...

Germanic warrior (4th century)

Dreaded Germanic warriors spreading out from Northern Europe towards the south also...

Rococo castle (Fertőd, Hungary)

The palace and park complex is Hungary´s grandest Rococo edifice, often called the...

Tyrosine

One of the 20 amino acids that make up proteins. It contains an aromatic ring as part of...

Methyl formate (C₂H₄O₂)

The ester of formic acid and methanol, an aroma compound found in certain fruits.

Oxygen (O₂) (beginner)

A colourless, odourless gas, an important component of the atmosphere, indispensable to...

Nitrogen (N₂) (basic)

A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.

Carbon dioxide (CO₂) (beginner)

Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Carbon monoxide (CO) (beginner)

Colourless, odourless gas, highly toxic to humans and animals in high concentration.

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