What happens to the molecules of water when water changes from a liquid to a vapor?

they become smaller.

they become heavier.

they move farther apart.

they increase in number.

he would use the colour black

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.