Chemistry Dictionary

Terminology "T"


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Temperature
A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.
Ternary Acid
A ternary compound containing H, O, and another element, often a nonmetal.
Ternary Compound
A compound consisting of three elements; may be ionic or covalent.
Tetrahedral
A term used to describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron.
Theoretical Yield
Maximum amount of a specified product that could be obtained from specified amounts of reactants, assuming complete consumption of limiting reactant according to only one reaction and complete recovery of product. (Compare with Actual Yield)
Thermal Cracking
Decomposition by heating a substance in the presence of a catalyst and in the absence of air.
Thermodynamics
The study of the energy transfers accompanying physical and chemical processes.
Thermonuclear Energy
Energy from nuclear fusion reactions.
Third Law of Thermodynamics
The entropy of a hypothetical pure, perfect, crystalline sustance at absolute zero temperature is zero.
Titration
A Procedure in which one solution is added to another solution until the chemical reaction between the two solutes is complete; the concentration of one solution is known and that of the other is unknown.
Total Ionic Equation
Equation for a chemical reaction written to show the predominant form of all species in aqueous solution or in contact with water.
Transition State Theory
Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.
Tyndall Effect
The scattering of light by colloidal particles.