Nuclear Atoms

Which scientist became known as "the father of the nuclear age"?

• J. J. Thomson
• John Dalton
• Ernest Rutherford
• Niels Bohr

Tags

NGSS.HS-PS1-8

Whose experiment involved shooting small, positively charged alpha particles at a sheet of gold foil?

• J.J. Thompson
• Max Planck
• Ernest Rutherford
• Niels Bohr

Tags

NGSS.HS-PS1-3

Rutherford referred to the center of the atom, where the mass was concentrated, as _____

• the kernel
• the nucleus
• the focus
• the heart

Tags

NGSS.HS-PS1-8

What particle was used in the gold foil experiment?

• Beta Particle

• Alpha particle

• Gamma ray

• High energy electron

Most of the alpha particles went straight through the gold foil. This suggested that....

• There is no interference between alpha and gold.

• Most of the atom is made up of empty space.

• The alpha particles were very tiny.

• quantum tunneling exists

• the nucleus is positively charged

Tags

NGSS.HS-PS3-5

Some of the alpha particles fired at the gold foil were deflected at angles. This was due to...

• reflection of the alpha source when it it the fluorescent screen.

• The alpha particles hitting the gold nucleus.

• Repulsion forces between the positively charged nucleus and the positively charged alpha particles.

• A mis-firing of the alpha source

• most of the atom is made up of space

Tags

NGSS.HS-PS2-4

Which scientist came up with the Plum pudding theory?

• Hantaro Nagaoka
• Ernest Rutherfud
• J.J Thomson
• Charles Darwin

What did the Plum pudding model suggest about the structure of atoms?

• That neutrons and electrons were arranged in a sphere.
•  that is was a sphere of positive charge throughout which the electrons were distributed
• That an atom was filled with neutrons, protons and a sphere of negative charge. 
• That neutrons, protons and electrons were distributed throughout a sphere.

which two particles are oppositely charged

• electron

• neutron

• proton

• anti-neutrino

• neutrino

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

which two subatomic particles have approximately the same mass?

• proton

• neutron

• electron

• neutrino