molecule

Smallest compound unit

A molecule is the smallest unit of a substance that retains its chemical properties—two or more atoms bonded together.

Water molecules consist of two hydrogen atoms and one oxygen atom.

In casual use, molecule suggests something extremely small: There's not a molecule of truth in what he said.

The adjective is molecular: molecular biology, molecular structure.

bond

covalent

Sharing electrons between atoms

double bond · single bond · triple bond · polar · nonpolar · linkage · attraction · interaction · affinity · cohesion

organic

carbon

Sixth element, atomic symbol C

alkyne · aromatic · lipid · protein · carbohydrate · nucleic acid · amino acid · enzyme · polymer · monomer

structure

configuration

Arrangement of parts

arrangement · lattice · framework · helix · chain · ring · branched · linear · three-dimensional · stereochemistry

atomic

atom

Element's smallest unit

nucleus · ion · isotope · particle · subatomic · quantum · photon · quark · lepton · orbital

analysis

spectroscopy

Study of light-matter interaction

microscopy · diffraction · imaging · detection · identification · formula · concentration · purity · characterization

synthesis

reaction

Response to stimulus

yield · polymerization · laboratory · biotechnology · pharmaceutical · nanotechnology · assembly · formation · pathway · precursor

Categories
Opposites
scale/quantity

moleculemass

Quantity of matter

bulk · heap · abundance · mountain · pile

structural complexity

moleculeatom

Element's smallest unit

quark · electron · aggregate · proton · crystal

discreteness vs. continuity

moleculecontinuum

Uninterrupted, gradual sequence

field · substance · matter · medium · plasma

Phrases
Family

molecular, molecules, biomolecule, macromolecule, intramolecular, intermolecular, macromolecules, molecularly, molecular weight

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G