Someone might claim that air is not matter because you can't see it. Write a paragraph showing how you would prove to the class that air has substance and is matter.
Also, What not to do in Lab worksheet.
Extra Credit periodic table crossword due by friday.
Reminder: Periodic table quiz on Sept. 22. Elements 1-36, 47, 50, 53, 55-56,78-80, 82, 92
Periodic element project due Oct. 1.
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