What type of change (physical or chemical) occurs when hydrogen bonds with oxygen to make water

Fossil fuels are organic compounds that are made from

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.

•hydration •dissociation •dissolving which one goes to which