Chemistry

?
At the start of the 19th Century, John Dalton described atoms to be what shape?
solid spheres
1 of 5
In 1897, why did JJ Thompson conclude this was incorrect?
His measurements of charge and mass showed the atom must have a smaller negatively charged particle.
2 of 5
the 'solid sphere' idea was changed; what was the new theory known as?
the 'plum pudding model'
3 of 5
Who showed that the 'plum pudding model' was wrong?
Rutherford and his students Geiger and Marsden
4 of 5
What was the 'gold foil experiment'?
Positively charged alpha particles fired at an extremely thin sheet of gold.
5 of 5

Other cards in this set

Card 2

Front

In 1897, why did JJ Thompson conclude this was incorrect?

Back

His measurements of charge and mass showed the atom must have a smaller negatively charged particle.

Card 3

Front

the 'solid sphere' idea was changed; what was the new theory known as?

Back

Preview of the front of card 3

Card 4

Front

Who showed that the 'plum pudding model' was wrong?

Back

Preview of the front of card 4

Card 5

Front

What was the 'gold foil experiment'?

Back

Preview of the front of card 5

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms resources »