Which of these is the best example of Jackson doing science by inquiry? A) Jackson watches a video on objects sinking and floating. He writes down all the main points of the video.

B) Jackson asks himself weather unopened soda cans sink or float. He designs an experiment to find out.

C) Jackson finds calculations on sinking and floating. He copies one of the calculations.

D) Jackson researches the history of soda can use, including how the size of the cans has changed over the last three decades.

its first and third is your answer i did the qustion the fourth isnt right

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.