Monday, October 11, 2010

#137

Pin this is the correct one. The one i showed yesterday is wrong because ethene has double bond so two pairs of dots have to be in the middle, to get the = bond.






Scribbled by at

1 comment:

Molly said...

you're such a good sister!

October 12, 2010 at 1:05 AM

Post a Comment

Subscribe to: Post Comments (Atom)