Atomic Theory Review

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively charged particles
• has an overall negative charge
• has an overall positive charge

Rutherford discovered the...

• electron
• proton
• neutron
• nucleus

What scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry?

• J.J. Thomson
• Ernest Rutherford
• John Dalton
• Democritus

Niels Bohr suggested that electrons.......

• are found in specific orbits
• electrons are scattered throughout the atom
• electrons move according to their energy level
• electrons are positive

Electrons orbit a certain distance from the nucleus. Either radiate or absorb energy when jumping orbitals.

• Dalton

• Thomson

• Rutherford

• Bohr

The atom is mostly large empty space with a small, dense nucleus at the center

• Dalton

• Thomson

• Rutherford

• Bohr

Atom is a positively charged cloud with embedded negative electrons

• Dalton

• Thomson

• Rutherford

• Bohr

Atoms are indivisible (cannot be broken down)

• Dalton

• Thomson

• Rutherford

• Bohr

What scientist proposed this atomic model?

• Dalton

• Thomson

• Rutherford

• Bohr

What scientist proposed this atomic model?

• Dalton

• Thomson

• Rutherford

• Bohr