Chem 8.2 Finding Electrons

Question 1

How do scientists develop explanations?

Answer 1

Ask a question
Suggest an explanation
Test the explanation
Check the evidence

Question 2

What was Thomson’s plum pudding model?

Answer 2

He discovered the electron, and he knew that atoms had no overall charge. So, his model had negatively-charged electrons are placed inside a positively-charged sphere.

Question 3

What was Nagaoka’s model?

Answer 3

Nagaoka disagreed with Thomson because he said that electrons cannot be spread inside a positively-charged sphere. So, his model consisted of electrons orbiting around the positively-charged sphere in rings outside. This resembled the planet Saturn.