What type of matter is 100 grams of sodium chloride a) homogenous mixture b) heterogeneous mixture c) pure substance that is an element d) pure substance that is a compound

I'd go with D, since it is technically a compound since it has a chemical construct and what not

D) a pure substance that is compound

May i please have brainliest mate?

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.