Chain is a linear combination of the same type of atom in a molecule. In straight chain molecules, the atoms are arranged in a line, with each atom in the chain linked to one preceding atom and one succeeding atom of the same type. A closed chain molecule is a chain where the atoms are linked in a ring structure.
Chelating agent is ligand that binds to a metal using more than one atom; a polydentate ligand.
Chemical reaction is a change of chemical properties of substances which react with each other. By means of a chemical reaction new substances are created by bond breaking between atoms and molecules of reactants and their reuniting in a new way, thereby creating products. Chemical reactions can be shown by chemical equations.
Chemisorption is a binding of a liquid or gas on the surface or in the interior of a solid by chemical bonds or forces.
A point-like object that undergoes circular motion changes its angular position from initial Θi to final Θf, relative to a fixed axis, specified in a coordinate system with an origin that coincides the centre of the circular path of object. The change in its angular position is called angular displacement ΔΘ = Θf - Θi. Also, a rigid body that rotates about a specified rotation axis, changing its angular position from initial Θi to final Θf, undergoes an angular displacement ΔΘ.
The average angular velocity, ωav, is the ratio of the angular displacement and the time interval Δt=tf-ti, in which that displacement occurs.
Θf and Θi are the initial and final angular position, respectively.
The instantaneous angular velocity ω is the limit of the average angular velocity, as Δt is made to approach zero.
ωav and ω are positive for the counterclockwise rotation (in direction of increasing Θ) and negative for the clockwise rotation (in direction of decreasing Θ).
SI unit for angular velocity is s-1.The measure for the angle Θ is radian. The relationship between radians and degrees is:
For example, the angular velocity of the minute hand of a clock is:
Covalent compound is a compound made of molecules - not ions, such as H2O, CH4, Cl2. The atoms in the compound are bound together by shared electrons. Also called a molecular compound.
Aromatic compounds are a major group of unsaturated cyclic hydrocarbons containing one or more rings, typified by benzene, which has a 6-carbon ring containing three double bonds. All the bonds in benzene (C6H6) are the same length intermediate between double and single C-C bonds. The properties arise because the electrons in the p-orbitals are delocalised over the ring, giving extra stabilization energy of 150 kJ/mol over the energy of Kekulé structure. Aromatic compounds are unsaturated compounds, yet they do not easily partake in addition reactions.
Historical use of the term implies a ring containing only carbon (e.g., benzene, naphthalene), but it is often generalized to include heterocyclic structures such as pyridine and thiophene.
Asparagine is neutral amino acids with polar side chains. The polar amino acids are an important class of amino acids since they provide many of the functional groups found in proteins. Asparagine is a common site for attachment of carbohydrates in glycoproteins. In general this is not very reactive residues. Asparagine is amide derivative of aspartic acid. Asparagine is not essential for humans, which means that it can be synthesized from central metabolic pathway intermediates and is not required in the diet.
Generalic, Eni. "Trostruka veza." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
Glossary
Periodic Table