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A dynamo converts mechanical energy into direct current.
This special concave polyhedron was named after a Hungarian mathematician.
A white, crystalline compound which breaks down when exposed to light.
Hypochlorite ions are formed when water is disinfected with chlorine.
A helical molecule consisting of alpha-D-glucose units. It is one of the basic components of starch.
Fibroin is a fibrillar protein excreted by silkworms.
Alpha-D-glucose is one of the stereoisomers of glucoses, specifically the D-glucoses.
A colourless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.
Potassium permanganate is used as a disinfectant.
A light yellow compound formed in the reaction of silver nitrate and potassium iodide.
Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.
Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.
Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.
The simplest aldose, an optically active compound.
Halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine.
One of the allotropes of phosphorus.
Atoms within hydrogen halides are bound by covalent bonds, forming polar molecules.
A non-polar amino acid. L and D molecules are mirror images of each other.
About 1,500 people were taken to the labour camp also known as ‘the Hungarian Gulag’ during the Rákosi era.
A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.