An answer to all of the questions, Answer the Class Discussion Question and comm

An answer to all of the questions,
Answer the Class Discussion Question and comment to at least two of your fellow students’ answers, and
3.at least one response to a comment left to one of your answers.
My hope is that you will participate more than the minimum. At the end of your comments and responses, please put the word count in parentheses. You can easily determine word count in a word processing program. Failure to include the word count will result in on (3) points deducted off your final score for each time it is not included.
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SciShow. (2019, May 26). 5 Periodic Tables We Don’t Use (And One We Do) [Video]. YouTube. https://www.youtube.com/watch?v=nk–R-IGwvo
Chemical Compounds and the Periodic Table Lab Discussion Question #5
How do we know that air is not a single substance? Metals have many similar properties, but not all properties are shared by all metals. Why is it useful to group them as metals? Why is it important that the Periodic Table is structured as a table, rather than a list of elements? How is the Periodic Table important for all of science and not just chemistry?
Class Discussion Topic
Could the Periodic Table be arranged differently? How would you arrange the Periodic Table and Why?