Terms starting with T
34 terms · page 2 of 2
Transmutation
Nuclear & Radiochemistry
Dimensionless
The conversion of one element into another through a change in the number of protons in the nucleus.
¹⁴N + ⁴He → ¹⁷O + ¹H
Transport Number
Electrochemistry & Redox
Dimensionless
The fraction of the total current carried by a particular ion in an electrolyte solution.
t₊ = λ₊ / (λ₊ + λ₋)
Transuranium Elements
Nuclear & Radiochemistry
Dimensionless
The synthetic elements with atomic numbers greater than 92, beyond uranium in the periodic table.
Z > 92
Triglyceride
Biochemistry & Polymer Chemistry
Dimensionless
An ester formed from glycerol and three fatty acid molecules, the main constituent of fats and oils.
glycerol + 3 RCOOH
Trigonal Bipyramidal Geometry
Chemical Bonding & Molecular Structure
degrees
A shape with five bonded atoms occupying three equatorial and two axial positions around a central atom.
AX₅
Trigonal Planar Geometry
Chemical Bonding & Molecular Structure
degrees
A flat molecular shape with three bonded atoms arranged around a central atom at 120°.
AX₃
Triple Point
States of Matter & Gas Laws
K, Pa
The unique temperature and pressure at which the solid, liquid and vapour phases of a substance coexist in equilibrium.
Trouton's Rule
Thermochemistry & Thermodynamics
J/(mol·K)
The empirical observation that the entropy of vaporisation of many liquids is close to 88 J/(mol·K) at their boiling point.
ΔS_vap = ΔH_vap / T_b ≈ 88
Turnover Number
Chemical Kinetics & Catalysis
s⁻¹
The number of substrate molecules converted per catalytic site per unit time.
TON = molecules converted / active sites
Tyndall Effect
Solutions & Colligative Properties
Dimensionless
The scattering of a light beam by colloidal particles, making the beam's path visible through the medium.