Atomic Theory : Models of the Atom

The the Gold Foil Experiment , alpha particles have

• negative charge
• positive charge
• no charge
• the charge varied

In the Gold Foil Experiment you did in class, the alpha particle was which of the following?

• the box
• the blocks
• the marble
• the table
• Option 4

When alpha particles are shot at an atom, most of the time they

• deflect slightly
• deflect and bounce back directly to the source
• go straight through
• none of the above

When alpha particles are shot at an atom, they can

• deflect slightly
• deflect and bounce back to the source
• go straight through
• a, b, and c
• none of the above

Which of the following was a Greek Philosopher who said that all matter is made of tiny particles and he named the named the atom after the Greek word atomos?

• Democritius
• John Dalton
• J. J. Thomson
• Rutherford
• Bohr

Which of the following scientists discovered the nucleus of the atom and determined that it was positively charged?

• John Dalton
• J. J. Thomson
• Rutherford
• Bohr
• Chadwick

The smallest unit of matter is known as a(n)

• atom
• cell
• molecule
• compound

Rutherford beamed which of the following particles at a sheet of gold foil?

• beta particle
• alpha particle
• gamma particle
• electron

The results of the Gold Foil Experiment showed which of the following?

• the nucleus is negatively charged
• the nucleus is positively charged
• the atom is made of mostly empty space
• the mass in an atom is evenly spread throughout

Which of the following individuals came up with the solid sphere model to explain atoms of different elements?

• Democritius
• John Dalton
• J. J. Thomson
• Rutherford