Question

fill in the missing information in the chart below: name of researcher equipment/ experiment sketch of model major idea/discovery n/a all atoms of a given element are identical in mass and properties thompson rutherford

Explanation:

1. The idea "All atoms of a given element are identical in mass and properties" is associated with John Dalton. He didn't have a specific complex equipment - his work was more theoretical at the time.
2. J.J. Thompson used a cathode - ray tube in his experiment to discover the electron. His model is the plum - pudding model where electrons are embedded in a positive sphere.
3. Ernest Rutherford used the gold - foil experiment. His major discovery was that the atom has a small, dense, positively - charged nucleus.

Answer:

Name of Researcher	Equipment/Experiment	Sketch of Model	Major Idea/Discovery
Thompson	Cathode - ray tube	Plum - pudding model (electrons in a positive sphere)	Discovery of the electron
Rutherford	Gold - foil experiment	Atom has a small, dense, positively - charged nucleus	Discovery of the atomic nucleus