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A chemical bond.
proteins
A compound is formed when two or more elements bond together.
ionic
there is only one type of bond between water molecules and that is the strong Hydrogen bond. Hydrogen bond can be formed only between H Atom and O,F,N. here we have O.
When the chemical bond is formed, it links the parts together.
A covalent bond
Nonpolar covalent bond.
It is called a peptide bond. It is formed by a condensation reaction (that is a reaction where water is produced). When two amino acids join a dipeptide is formed. A typical protein contains many thousands of amino acids all joined together by peptide bonds.
Hydrogen Bond
The diatomic molecule of bromine is formed.
The atoms in a water molecule are held together by covalent bonds; this means that the bonded atoms have formed a hydrogen bond between them, leading to a water dimer.