Why was the Copernicus discovery called the Copernican revolution A. It caused a big fight in the scientific community B. It confused scientists about which planetary body revolved around the other C. It represented a change in scientific thought. D. It proved the science could never be trusted.

let that person have a turn to speak : )

50.23 i believe is correct but don't quote me on that.

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.  

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