Atomic Model Review

Electrons have a ___________ charge.

• Positive
• Negative
• Neutral

Tags

NGSS.MS-PS2-3

Who developed the first atomic theory supported by experiments?

• Democritus

• JJ Thomson

• Dalton

• Rutherford

Which person/scientist discovered electrons?

• Democritus

• Dalton

• JJ Thomson

• Rutherford

Which of the following ideas about atoms were discovered by Rutherford's Gold Foil experiment? Check all that apply!

• Atoms have a tiny, dense positively charged nucleus.

• Atoms are solid, indivisible spheres.

• Atoms have smaller particles that are negatively charged.

• Atoms are mostly empty space.

Thomson used the Cathode Ray tube to discover electrons. What evidence showed that electrons had a negative charge?

• The cathode rays bent toward the negative pole of a magnet.

• The cathode rays were formed not matter what metals or gases were used in the tube.

• The cathode rays were bent to a very large angle.

• The cathode rays bent toward the positive pole of a magnet.

Which Greek first had the idea of atoms?

• Aristotle

• Democritus

• Gyro

• Socrates

Which scientist developed the “plum pudding” model where electrons are spread through the atom randomly?

• Thomson

• Dalton

• Chadwick

• Schrodinger

Which scientist first concluded that electrons orbit around the nucleus?

• Rutherford

• Dalton

• Thomson

• Schrodinger

Which scientist's model is shown?

• Bohr

• Rutherford

• Chadwick

• Schrodinger

Which scientist's model is shown?

• Dalton

• Schrodinger

• Chadwick

• Bohr