Answer:
12
Explanation:
because that plot and the iron
Arsenic is a pure element. Elements (atoms) are the simplest building blocs excluding smaller elementary particles such as electrons, neutrons, quarks, protons etc.
This means that Arsenic can not be broken down any further by chemical change, only nuclear decay can cause the breakdown of large elements into smaller ones. Chemical change would be the combination of multiple elements into a compound or the decomposition of a molecule/compound into pure elements or smaller compounds.
Answer:
the last one is corrected
I can't explain the like dissolves like part but the water and oil I can
when oil is poured into water the oil will stay at the top of the water meaning that water is more dense than oil
