#1 - don't know. looks like a mustard of some kind #2 - looks like Ludwigia palustris #3 - Ranunculus abortivus #4 - Lonicera sp? #5 - Ribes sp.
2. might be Stellaria media http://www.freshfromflorida.com/pi/weed-of-the-month/1109-stellaria-media.html
#6 tough to tell from photo - looks like silvery scales on leaf. Maybe Elaeagnus umbellata. #7 same as #4? #8 cherry. Looks like Prunus serotina. Look at the back side of the leaf. P. serotina usually has white fuzz along the midrib towards the base of the leaf (turns brownish later in the season). #9 agree with abgardeneer in calling this a Geum #10 maybe Agrimonia