Terms starting with S
104 terms · page 5 of 5
Successive Ionisation Energies
Atomic Structure & Periodicity
kJ/mol
The series of energies required to remove electrons one after another from the same atom.
IE₁ < IE₂ < IE₃ …
Superacid
Acids, Bases & Salts
Dimensionless
An acid stronger than pure sulfuric acid, capable of protonating species normally regarded as completely non-basic.
H₀ < −12
Supercritical Fluid
States of Matter & Gas Laws
K, Pa
A substance held above both its critical temperature and critical pressure, where liquid and gas phases are indistinguishable.
T > T_c and p > p_c
Supersaturated Solution
Solutions & Colligative Properties
mol/L
An unstable solution containing more dissolved solute than the equilibrium solubility at that temperature.
Surface Tension
States of Matter & Gas Laws
N/m
The energy required to increase the surface area of a liquid by unit amount, arising from unbalanced intermolecular forces at the surface.
γ = F / L
Surroundings
Thermochemistry & Thermodynamics
Dimensionless
Everything outside the chosen system with which it can exchange energy or matter.
System
Thermochemistry & Thermodynamics
Dimensionless
The specific part of the universe chosen for thermodynamic study, separated from everything else by a real or imaginary boundary.
Systematic Error
Analytical Chemistry & Spectroscopy
Various
An error that shifts every result in the same direction by a similar amount.