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General chemistry
Industry: Chemistry
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General chemistry
Chemical bond
Chemistry; General chemistry
A chemical bond is a strong attraction between two or more atoms. Bonds hold atoms in molecules and crystals together. There are many types of chemical bonds, but all involve electrons which are ...
Infrared radiation
Chemistry; General chemistry
Electromagnetic radiation with wavelength longer than visible light but shorter than that of microwaves . Infrared radiation is produced by hot objects; absorption of infrared radiation causes ...
Ampere
Chemistry; General chemistry
The SI unit of electric current , equal to flow of 1 coulomb of charge per second. An ampere is the amount of current necessary to produce a force of 0.2 micronewtons per metre between two ...
Ethyl
Chemistry; General chemistry
A molecular fragment produced by removing a hydrogen atom from ethane (CH3-CH3). For example, ethyl chloride is CH3-CH2-Cl.
Nucleotide
Chemistry; General chemistry
A molecule which is a basic building block of nucleic acids and which plays a key role in energy transfer in biochemical reactions. Nucleotides consist of a five-carbon sugar, a heterocyclic ...
Trigonal pyramidal
Chemistry; General chemistry
A molecular shape that results when there are three bonds and one lone pair on the central atom in the molecule. NH3 is a trigonal pyramidal molecule.
Inert gas
Chemistry; General chemistry
Any of the elements of Group 18, which includes helium, neon, argon, krypton, xenon, radon, and element 118. These elements are referred to as "inert" or "noble" because they do not easily form ...
