Answer key Chemistry test Jan 13-11 & Physics Work for this week Jan 16-20

Hi All
Please correct your mistakes using the answer key in this link. I'll check correction on Thursday. If you have any questions prepare them and post them on the parking lot. I'll answer them on friday.
Note: excuse me, there is one mistake in the answer key, page 1, in the symbol of silver the mass number appears as 61 it must be 108.
https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B94hvJdHbdzMZWEzNWQ0NDgtYzU4MS00NTk0LWEwZjQtZmVmZmZjMGVlMTNk&hl=en_US

In Physics, we have covered sections 2.1 and 2.2 with their practice exercises up till now. you do the two extra exercises as a H.W for thursday. By the end of Friday we must finish section 2.3, practice problems 9 till 13 and practice problems 14 till 19. The section review exercises 19 till 24 on page 42 may be your HW for the weekend.