Results for “pH”
24 terms
Adenosine Triphosphate
The nucleotide that acts as the universal energy currency of living cells.
Nuclear & RadiochemistryAlpha Decay
Radioactive decay in which a nucleus emits a helium-4 nucleus, losing two protons and two neutrons.
States of Matter & Gas LawsAmorphous Solid
A solid whose particles lack long-range order, showing only the short-range regularity characteristic of a frozen liquid.
Acids, Bases & SaltsAmphiprotic Species
A species that can both donate and accept a proton.
Acids, Bases & SaltsAmphoteric Substance
A substance able to react as either an acid or a base depending on what it meets.
Acids, Bases & SaltsAcidic Buffer
A buffer made from a weak acid and one of its salts, giving a pH below 7.
Acids, Bases & SaltsAcidic Salt
A salt whose aqueous solution has a pH below 7, or one that still contains replaceable hydrogen.
Acids, Bases & SaltsAcid–Base Titration
A titration in which an acid is neutralised by a base, or the reverse, monitored by an indicator or a pH meter.
Foundations of ChemistryAllotropy
The existence of an element in two or more distinct structural forms within the same physical state.
States of Matter & Gas LawsAnisotropy
The dependence of a physical property on the direction in which it is measured.
Acids, Bases & SaltsAcid–Base Indicator
A weak acid or base whose conjugate forms have distinctly different colours, used to signal the end point of a titration.
Chemical Kinetics & CatalysisAdsorption
The accumulation of molecules of a gas or liquid on the surface of a solid.
Solutions & Colligative PropertiesAerosol
A colloidal system in which solid or liquid particles are dispersed in a gas.
Organic ChemistryAldehyde
A compound containing a carbonyl group bonded to at least one hydrogen atom, so it lies at the end of a chain.
Organic ChemistryAldol Condensation
The base-catalysed reaction of two carbonyl compounds to give a beta-hydroxy carbonyl, which often dehydrates to an enone.
Organic ChemistryAlkene
An unsaturated hydrocarbon containing at least one carbon–carbon double bond.
Organic ChemistryAmine
A compound derived from ammonia by replacing one or more hydrogens with alkyl or aryl groups.
Organic ChemistryArene
An aromatic hydrocarbon containing one or more benzene rings.
Analytical Chemistry & SpectroscopyAtomic Absorption Spectroscopy
A technique that measures the concentration of a metal from the light its free gaseous atoms absorb.
Atomic Structure & PeriodicityAtomic Orbital
A mathematical function describing the region around a nucleus where an electron of given energy is most likely to be found.
Foundations of ChemistryAtomicity
The number of atoms present in one molecule of an element.
Acids, Bases & SaltsAcidic Solution
A solution in which the hydrogen ion concentration exceeds the hydroxide ion concentration.
Electrochemistry & RedoxAnode
The electrode at which oxidation occurs.
Foundations of ChemistryAtom
The smallest particle of an element that retains the chemical identity of that element.