Foundations of Chemistry
8 terms
Matter
Foundations of Chemistry
kg
Anything that occupies space and possesses rest mass, existing in the solid, liquid, gas or plasma state.
Mixture
Foundations of Chemistry
Dimensionless
A physical combination of two or more substances that keep their own chemical identities and can be present in any proportion.
Molar Mass
Foundations of Chemistry
g/mol
The mass of one mole of a substance, numerically equal to its relative atomic or molecular mass expressed in grams.
M = m / n
Molar Volume
Foundations of Chemistry
L/mol
The volume occupied by one mole of a substance under stated conditions of temperature and pressure.
V_m = V / n = RT / p
Mole
Foundations of Chemistry
mol
The SI base unit for amount of substance, containing exactly 6.02214076 × 10²³ elementary entities.
n = m / M
Molecular Formula
Foundations of Chemistry
Dimensionless
The formula stating the actual number of atoms of each element present in one molecule of a compound.
molecular formula = n × empirical formula
Molecular Mass
Foundations of Chemistry
Dimensionless
The sum of the relative atomic masses of all atoms shown in a molecular formula.
M_r = Σ A_r (all atoms)
Molecule
Foundations of Chemistry
Dimensionless
An electrically neutral group of two or more atoms held together by covalent bonds, acting as the smallest unit of a covalent substance.