grade 9 VIS physics - rutherfords and nuclear stability

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

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

What particle was used in the gold foil experiment?

• Beta Particle
• Alpha particle
• Gamma ray 

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.
• None of the above

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

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.

All atoms consist of mostly empty space.

• True
• False

Almost all of the mass of an atom is found in what part?

• The electron cloud
• The nucleus
• The protons
• The charge

Rutherford’s gold foil scattering experiment indicated that 

• the nucleus of an atom occupies most of an atom’s volume
• positive charges are dispersed throughout the atom.
• positive charges are concentrated in a very small core at the atom’s center
• protons and neutrons are located in the nucleus.

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.MS-PS2-3

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Tags

NGSS.HS-PS1-8