Medical Physiology/Basic Biochemistry/Basic Chemistry

Basic Organic atoms and molecules

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Water and Solutes

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Chemical bonds

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there are generally two types of bonds:-

1)intra{within}molecular forces

2)inter{between}molecular forces


the intramolecular forces, are forces of attraction between atoms in a molecule i.e. the force of attraction between atoms that forms molecules e.g. ionic and covalent bonding.

the intermolecular forces, are ones between molecules that forms substances e.g. van deer waals, dipole-dipole, hydrogen bonds

ionic bond

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Covalent Bonds

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Hydrogen Bonds

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when H is bonded to more electronegative elements (especifically- F2,O2,N2),H carries a partial positive charge

'due to the electronegativity difference' which enable it to bond with the more electronegative element in adjacent molecule, thus H acts as a bridge between the more electronegative atoms in adjacent molecule.

H bond can be viewed as special type of permanent dipole-dipole force.

Metabolism and Reactions

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