A student compares the boiling point of substances having different intermolecular forces. Which scientific problem is the student most likely investigating? A. is boiling point affected by the strength of particle attraction?
B. Is boiling point correlated to melting point? C. is boiling point affected by the mass of the sample?
D. Is boiling point the temperature at which a substance changes its state?

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

the correct answer would be b) volume versus temperature, because they are also directly proportional.