Foundations of Chemistry
8 terms
Cation
Foundations of Chemistry
C (charge)
A positively charged ion produced when an atom or molecule loses one or more electrons.
M → Mⁿ⁺ + n e⁻
Centrifugation
Foundations of Chemistry
g (RCF)
A separation technique that uses rapid rotation to generate an effective gravitational field, forcing denser components to the bottom of a tube.
RCF = 1.118 × 10⁻⁵ × r × N²
Chemical Change
Foundations of Chemistry
Dimensionless
A change in which the atoms of one or more substances are rearranged into new substances with different properties.
Chemical Formula
Foundations of Chemistry
Dimensionless
A symbolic notation that states which elements a substance contains and in what proportions, using element symbols and subscripts.
Chemical Property
Foundations of Chemistry
Various
A characteristic that describes how a substance transforms into a different substance, observable only during a chemical reaction.
Chemical Symbol
Foundations of Chemistry
Dimensionless
The one-, two- or three-letter abbreviation used internationally to represent an element.
Compound
Foundations of Chemistry
Dimensionless
A pure substance formed when two or more different elements combine chemically in a fixed, whole-number mass ratio.
Crystallisation
Foundations of Chemistry
Dimensionless
A purification technique in which a solid is separated from solution as an ordered crystalline lattice.