Rutherford

Positively charged particles located in the nucleus of an atom

• protons

• quarks

• electrrons

• neutrons

Why did Ernest Rutherford and his colleagues perform the Gold-Foil Experiment?

• They wanted to test and confirm the Plum-Pudding model

• They wanted to test John Dalton's Model

• They were looking for electrons

• They wanted to come up with their own Atomic Model

What is the nucleus of the atom?

• It is a centra organel of a cell

• It is a center of a fruit

• It is a very dense cenral core of an atom that has a positive charge

• It is a very dense cenral core of an atom that has a negative charge

Tags

NGSS.HS-PS1-8

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.

• alpha particles have a positive charge.

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

What results did Rutherford expect to see if the Plum-Pudding model is correct?

• He expected that all of the alpha particles would go through a gold-foil with no change in direction (no deflection).

• He expected that most of the alpha particles would reflect off of the gold-foil and not go through.

• He expected that most of the alpha particles would go through with no deflection, a few would go through but be deflected, and very rarely some would reflect back after hitting the gold-foil.

How did Rutherford come up with his atomic theory?

• Testing gamma rays against dogs

• Testing alpha rays of radiation against gold foil

• Testing zinc against silver

• Testing zinc against gold

What is an alpha particle?

• It is a dominant particle in a subatomic world

• It is a high-energy particle that has 2+ charge

• It is a high-energy particle that has 2- charge

• It is a helium atom with a neutral charge

Whose created this atom model?

• Dalton

• Thomson

• Rutherford

• Bohr

• Heisenberg and Schrodinger

Who's model is this

• JJ Thomson

• Newton

• Rutherford

• Elon Musk

Tags

NGSS.HS-PS1-8

Rutherford's experiment that he used to discover protons and the nucleus.

• gold foil experiment

• cathode ray experiment

• neither of these is correct