Atomic Models Review

Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

• Albert Einstein

Tags

NGSS.MS-PS1-1

Who discovered that the atom had an small, dense, positively charged center?

• Ernest Rutherford

• J.J Thomson

• Robert Millikan

• John Dalton

Tags

NGSS.HS-PS1-8

What can you conclude from the fact that scientists continue to update the atomic model?

• New information about atoms continues to be discovered
• Old information about atoms is completely useless
• Scientists did not have any information about atoms until a few years ago
• Scientists still have no idea what atoms look like

Tags

NGSS.MS-PS1-1

Who named the positive center of the atom the "nucleus?"

• Democritus

• Dalton

• Thomson

• Rutherford

In the atomic model nicknamed the "plum pudding" model, what do the plums represent?

• the nucleus

• the atom

• the electrons

• the positive material

Tags

NGSS.MS-PS1-1

Which scientist proposed a new atomic model after discovering the electron in 1897?

• Dalton

• Thomson

• Rutherford

• Bohr

Who discovered that atoms are mostly empty space?

• Dalton

• Thomson

• Rutherford

• Bohr

In the model nicknamed "the solar system model" what are the electrons like?

• the sun

• the nucleus

• the planets

• the moon

Tags

NGSS.HS-PS2-4

He found that atoms have smaller parts and found negative electrons that he theorized were surrounded in a sphere of positive charges

• J.J. Thomson
• Ernest Rutherford
• Niels Bohr
• James Chadwick

Tags

NGSS.MS-PS1-1

He found the positively charged protons in the nucleus and said that electrons moved around the nucleus

• J.J. Thomson
• Ernest Rutherford
• Niels Bohr
• James Chadwick

Tags

NGSS.HS-PS1-8