Respuesta :

Combustion, breakdown, single-replacement, double-replacement, and combinations are the five fundamental types of chemical reactions.

How many substances are being used?

Scientists have for the first time compiled a global inventory of more than 350,000 chemicals and chemical mixes that are authorized for commercial manufacturing and usage, which is up to three times the number typically assumed.

What chemical is the most widely used?

Sulfuric acid, also referred to as H2SO4, is the chemical that is most frequently manufactured worldwide. The majority of the time, it is utilized in fertilizers, but it is also present in many industrial cleaning products.

To know more about chemical visit:-

https://brainly.com/question/29240183

#SPJ4