This question asks you to get 5 of Dalton's postulates and analyze them based on current knowledge.
For example, imagine a postulate saying that atoms are indivisible. Based on what is known nowadays, you may agree with the postulate and keep it as it is; or disagree with this postulate and discard it or modify it. Since we already know that atoms are divided into sub-particles such as protons, neutrons, and electrons, this would be the modification for this postulate, in this example.
Besides that, the question suggests that you make a table with 3 columns, being the first one the postulate itself, then the second could be if you would keep, modify or discard; and the third could be the modification if that was the case.
