The activities that involves a chemist would be activities that involves quantification and qualification of a product. One that involves chemical reactions and the use of chemical substances. Hope this answers the question. Have a nice day.
<span>By definition, summer is the portion of the year in which the hemisphere is tilted toward the sun, so that sunlight strikes the surface more directly. When it is summer in the northern hemisphere, it is winter in the southern hemisphere, and vice versa</span>
Oxidation state is a number that is assigned to an element in a chemical combination. The number represents the number of electrons that an atom can gain, loses, or share when chemically bonding with an atom of another element. In this case the oxidation state or the oxidation number of Ca(NO3)2 is Zero, since its an electrically neutral compound. Thus the sum of oxidation number of calcium, nitrogen and oxygen is zero.
(2) Arsenic. It is an element and elements are chemically the simplest units and cannot be broken down by any chemical change.
I am pretty sure that electron amounts and proton amounts are the same.