Although most of us almost do nothing to just be "physically alive" but this "just be physically alive" is the most complex process goes on earth. Since it's not something that we do or it must be called as something that we can't do ! A millions of chemical and biological processes goes inside us whose balance keeps us alive and surely due to the complexities of these processes, the nature didn't give it's control to us ! Any sort of unbalance in this biological system causes us unfit that we termed as disease. If this disturbance in balancing of these processes are mild then the body cure itself in some days and if it is more than that then we have to go for certain prescriptions which ultimately helps the body to get rid of those disturbances or technically from those diseases. But there are certain substance (apart from any virus/bacteria) which disturb this balance in such a way that even prescription doesn't works better ! So h...
Chemicals like Laughing gas, Hydrochloric acid, Nitric acid and several others are going to be explained in the most easiest and practical ways. Practical situations like existence of fire and the chemical processes involved in this would be discussed. Moreover human body chemicals and nutrients are also being discussed in the most interesting way !