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moleculeWater is made up of one oxygen molecule and two hydrogen molecules.
Water is composed of one oxygen atom and two hydrogen atoms.A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
Each molecule is very small.
Each molecule is very small.This molecule has a unique structure.
This molecule possesses a distinctive structure.Scientists study every molecule.
Scientists examine all molecules.single molecule
single moleculecomplex molecule
complex moleculewater molecule
water moleculeatom
particle
unit