A polypeptide, and when several polypeptides are formed they link to form a protein.
Two or more elements that are chemically joined together is a compound, I think.
no they do not
There antiacids
compound
When two elements are join together the molecule of a compound is formed.
a compound
Dehydration synthesis
A compound.
alkali
Mixtures are just that... things mixed together and not joined. A compound is joined together chemically and cannot be split too easily.
A molecule
Molecule :)