Advantages And Disadvantages Of Chemical Bonds

The molecule is a chemical structure that is composed of two or more atoms either from the same type or different, these atoms are joined with chemical bonds which is a result of either sharing or exchanging electrons. √

There are four main types of chemical bonds by joins molecules together: ionic bonds, covalent bonds, polar bonds as well as hydrogen bonds.

Ionic bonds involve the transfer of one electron from one atom to another giving rise to a positive atom (Cation) and the gaining atom becoming negative (Anion). For example, a sodium atom giving an electron to chloride atom to give rise to sodium chloride (NaCl). √

Covalent bonds represent the most common bond in organic molecules. This involves the sharing of electrons between atoms. For example, four electrons from one carbon atom are shared with four electrons from four hydrogen atoms (one electron from each hydrogen atom) giving rise to Methane gas (CH4). Also, two electrons from one oxygen atom are shared with two electrons from two hydrogen atoms giving rise to one molecule of water (H2O). √

Polar bonds are intermediate between ionic and covalent bonds. It is the bond between two molecules one of which is negatively charged and the other one is positively charged. The best example is the polar bond between two molecules of water via their oxygen atoms.

Finally, once two

The diffusion happens during the gaseous exchange process. The blood in the capillaries surrounding the alveoli has lower oxygen concentration comparing to the blood in the alveoli. As a result the oxidative blood moves outside the alveoli to the blood vessels. The same process happens with carbon dioxide. The level of carbon dioxide in the blood surrounding the alveoli is higher than in the blood inside alveoli. As a result the carbon dioxide will enter the alveoli by the diffusion process then it will leave the lungs by exhalation process. [Gaseous exchange. 2018]