Examlex
MDMA, commonly known as ecstasy, is a form of amphetamine.
Molecule
The smallest particle in a chemical element or compound that has the chemical properties of that element or compound, consisting of two or more atoms bonded together.
Constitutional Isomer
Molecules with the same molecular formula but different arrangements of atoms in space.
Empirical Formula
The simplest positive integer ratio of atoms present in a compound, not indicating the actual bonding of the atoms.
Formula Mass
The sum of the atomic masses of all atoms in a formula unit of a compound, usually measured in atomic mass units (amu).
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