Ozone (O₃)

An allotrope of oxygen, consisting of 3 oxygen atoms.

Butane (C₄H₁₀)

The fourth member in the homologous series of alkanes.

Battle of Muhi (11–12 April 1241)

The devastating defeat of the Hungarians in the battle against the Mongolians was the result of several bad decisions.

Genome editing

Genome editing is a type of genetic engineering which results in changes in the genome of an organism. This animation presents one of the best-known genome...

Types of farms and villages

The structure and density of farms and villages depend on the geographical features of the region.

Ethane (C₂H₆)

The second member in the homologous series of straight-chain alkanes.

Maltose (malt sugar) (C₁₂H₂₂O₁₁)

A disaccharide formed by the joining of two alpha-D-glucose molecules.

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.

Glycylglycine (C₄H₈N₂O₃)

The simplest peptide, formed from two glycine molecules by a peptide bond.

Glycerol (propane-1,2,3-triol) (C₃H₈O₃)

A triol that is often used as an ingredient of creams and ointments.

Ethanol (ethyl alcohol) (C₂H₅OH)

The best known alcohol, important in the food industry.

Molecule exercise V (Oxo compounds)

An exercise about the groups and structure of oxo compounds.

Boron trifluoride (BF₃)

Colourless, heavier-than-air gas with a pungent odour. It forms white fumes in moist air.

Propane (C₃H₈)

The third member in the homologous series of straight-chain alkanes.

Fluorine (F₂)

The lightest halogen, a pale yellow-green, toxic gas, extremely reactive. Its best known compound is teflon.

Chloromethane (methyl-chloride) (CH₃Cl)

Chloromethane can be prepared by heating a mixture of methane and chlorine.

Beta-D-ribose (C₅H₁₀O₅)

A crystalline compound found in nucleic acids, coenzymes, nucleotides and nucleosides.

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