This explanation is for this equation
oxygen can be removed from metal oxides in chemical reactions. for example:

copper oxide + carbon → copper + carbon dioxide

2cuo(s) + c(s) → 2cu(l) + co2(g)

in this reaction, carbon is oxidised because it gains oxygen. at the same time, copper oxide is reduced because oxygen is removed from it.

so write the explanation for the displacement reaction for zinc+ iron sulphate= zinc sulphate+iron

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

answer carbon and three oxygen atoms;

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.