Results for “Mole”
18 terms
Photochemical Quantum Yield
The number of molecules reacting for each photon of light absorbed by the system.
Stoichiometry & Chemical ReactionsPhotochemical Reaction
A reaction initiated by the absorption of light, which promotes a molecule to an electronically excited state.
Chemical Kinetics & CatalysisPhysisorption
Weak adsorption in which molecules are held to a surface by van der Waals forces alone.
Chemical Bonding & Molecular StructurePolarisability
The ease with which the electron cloud of an atom, ion or molecule can be distorted by an external electric field.
Biochemistry & Polymer ChemistryPolymer
A large molecule built from many repeating structural units joined by covalent bonds.
Acids, Bases & SaltsPolyprotic Acid
An acid capable of donating more than one proton per molecule.
Biochemistry & Polymer ChemistryProtein
A large biomolecule made of one or more chains of amino acids folded into a specific three-dimensional shape.
States of Matter & Gas LawsPartial Pressure
The pressure that one component of a gas mixture would exert if it alone occupied the whole volume.
Acids, Bases & SaltsPhenolphthalein
An acid–base indicator that is colourless in acid and pink in alkaline solution, changing between pH 8.3 and 10.0.
Biochemistry & Polymer ChemistryPhospholipid
A lipid in which one fatty acid of a triglyceride is replaced by a phosphate-containing group.
Biochemistry & Polymer ChemistryPhotosynthesis
The process by which plants use light energy to convert carbon dioxide and water into carbohydrate and oxygen.
Foundations of ChemistryPhysical Change
A change that alters the form or state of a substance while leaving its chemical composition intact.
Chemical Bonding & Molecular StructurePi Bond
A covalent bond formed by the sideways overlap of parallel p orbitals, with electron density above and below the internuclear axis.
Acids, Bases & SaltspKa
The negative logarithm of the acid dissociation constant, giving a convenient scale of acid strength.
Chemical Bonding & Molecular StructurePolar Covalent Bond
A covalent bond in which the shared electrons are unequally distributed because the bonded atoms differ in electronegativity.
Solutions & Colligative PropertiesPositive Deviation
Behaviour in which a solution exerts a higher vapour pressure than Raoult's law predicts.
Stoichiometry & Chemical ReactionsPyrolysis
The thermal decomposition of a substance at high temperature in the absence of oxygen.
Chemical Kinetics & CatalysisPre-exponential Factor
The constant A in the Arrhenius equation, representing the frequency of appropriately oriented collisions.