Make this table in your iSN. How did we figure out these very, very, small particles existed? As we go, 1) check the boxes that apply in your table 2) draw a diagram for each model. Atom Videos: Nanotechnology. How small are atoms? http://www.firecold.com/videos/the-real-size-of-an- atom.
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How did we figure out these very, very, small particles existed? As we go, 1) check the boxes that apply in your table2) draw a diagram for each model.
Atoms are so small it is difficult to imagine.
Atoms are mostly empty space. Drawings of the atom don’t show his because otherwise the nucleus would not be visible.
The nucleus is very dense!
This theory was ignored and forgotten for more than nucleus?2000 years!
Gold Foil Experiment nucleus?
What does your table look like? nucleus?
We have seen several atomic ‘models.’ nucleus?What is the scientific definition of a model?When would you use a model?Can we think of other examples of models?
Search terms for your investigation:
Democritus – Billiard ball model
JJ. Thomson – plum pudding model
Ernest Rutherford- Gold Foil Experiment
Inside of protons and neutrons- Quarks, Gluons
Details on experiments- Glencoe book pg62-74
In sum, the force holding the nucleus together is stronger than the repulsive force of the positively charged protons.