Why does chemistry affect all aspects of life and most natural events?

All things in nature be it Alive or not are some or other way related to chemistry because they are all made out of matter. And all things that are made of matter have atoms neutrons electrons and protons in them the reason for any reaction to take place hence there is chemistry everywhere around us.

Anything that is something tends to react with one or other hence becomes a part of chemistry.

All substance that has mass is made of matter - composed of atoms. Chemistry is the study the combination and separation of atoms into these substances and their consequent properties as a result. Chemistry, therefore, is integral to all part of living and nonliving.