Q1. This question is about copper sulfate, Blue copper sulfate turns white when it is heated. The word equation for the reaction is:
hydrated copper sulfate = anhydrous copper sulfate + water
blue
white
(a) What name is given to hydrated copper sulfate in this reaction?
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Catalyst
Element
Product
Reactant
(1)

c8h10 is your answerr

it means there are 3 atoms of oxygen

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".