ATOM
The smallest portion of an element found in the periodic; examples include carbon, oxygen, gold
Biomolecule
an organic molecule produced by a living organism
Chemical bond
a connection made between atoms when electrons are attracted, shared, or transferred
Condensation reaction
a chemical reaction that combines smaller molecules and forms water as a byproduct; the reaction is often used to form polymers
Covalent bond
a chemical bond formed when elements share electrons
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