Cleaning, baking, cooking, beer fabrication, all involve chemical reactions.
materials used in chemical reactions are reactants
Compounds that help chemical reactions are called catalysts.
Cellular respiration and photosynthesis.
Generally water is used as a medium for chemical reactions.
Examples of chemical reactions: burning of fuels, preparation of beer, cooking cakes, digestion of foods in stomach etc.
dry ether is generally used as solvent in chemical reactions. to the best of my knowledge there is no reaction where ether is used as a catalyst.
The meaning of chemical is a process involving chemical reactions.
A catalyst
These are not chemical reactions but thermonuclear reactions.
Substances are used to make chemical reactions.
I don't get the question. Chemicals are everywhere. You are made of chemicals. You eat and drink and live around chemicals everyday. Chemical reactions govern our lives; biological and non-living. Our technology is held with chemical reactions. I wouldn't say there's a primary purpose or use of chemicals... it's everything/everywhere.
chemical reactions are a big thing during our lives for instance.... if we didn't have water there will probably be no coke, just juice, oranges etc... thats why we need chemical reactions so that we have what we have today and what we use today such as electrical things etc...