| Q: | I need a picture of the plumb pudding model and a little information on it. -Zac Martin (age 16) |
| A: | Zac -
The plum pudding model of the atom came before we understood that atoms had nuclei or even neutrons. At that point, all they knew was that atoms had a positively charged part and negatively charged parts. In this model, the positive part was like the ’pudding’ - basically a round glob of positively charged stuff. The negative parts were the ’plums’ - little points of negative charge scattered through the ’pudding.’ Some people refer to the plum pudding model as the ’chocolate chip cookie model’ for reasons that I think you can guess: (from http://cwx.prenhall.com/bookbind/pubbooks/blb/chapter2/medialib/blb0202.html) -Tamara (republished on 07/21/06) |