Foundations of Chemistry
8 terms
Accuracy
The closeness of a measured value to the true or accepted value of the quantity being measured.
Foundations of ChemistryAllotropy
The existence of an element in two or more distinct structural forms within the same physical state.
Foundations of ChemistryAnhydrous
Describing a substance from which all water, including water of crystallisation, has been removed.
Foundations of ChemistryAnion
A negatively charged ion produced when an atom or molecule gains one or more electrons.
Foundations of ChemistryAtom
The smallest particle of an element that retains the chemical identity of that element.
Foundations of ChemistryAtomic Mass Unit
A mass unit defined as exactly one twelfth the mass of a free, unbound carbon-12 atom in its ground state.
Foundations of ChemistryAtomicity
The number of atoms present in one molecule of an element.
Foundations of ChemistryAvogadro's Number
The number of elementary entities in one mole of substance, fixed by definition at 6.02214076 × 10²³ mol⁻¹.