First of all, chemicals are different. But the most interesting and we can say dangerous is that sometimes we do not know what can happen when mixing chemicals. Therefore, in any case, it is not worth the risk. And now, specifically, what can threaten health from contact with chemicals. If acid gets on the skin, it can lead to the formation of ulcers that are very difficult to heal. Various solvents and substances that are readily volatile can lead to poisoning. And spilling various solvents in the presence of alkali metals can easily cause a fire, especially if you work with alkali metals.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.