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Amine in which the nitrogen is part of a ring.

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Safranine

Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

Lewis Dot Formula (Electron Dot Formula)

Representation of the core of a molecule, ion or formula unit by showing atomic symbols and only outer shell electrons.

Unsaturated Hydrocarbons

Hydrocarbons that contain double or triple carbon-carbon bonds.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Nucleons

Particles comprising the nucleus, protons and neutrons.

Concentration

Amount of solute per unit volume or mass of solvent or of solution.

Barometer

A device for measuring pressure.

End Point

The point at which an indicator changes colour and a titration is stopped.

Chemistry is a familiar school subject

Everyone liked to observe the reaction of reagents. But few know interesting facts about chemistry, which we will discuss in this article.