The atomic number represents the number of protons present in an atom.Therefore,the answer is B.
The word elliptical refers to regular ovals.
A physical change. chemical changes require the molecule itself to change. If you put NaCl into solution, the NaCl is still there which is evident by the fact that if you lower the amount of water, NaCl precipitates out.
In order to float the demsoty of the floating obkect must be lower then the liquid it is in. the only one that works for is Citric acid