Development of Atom

Who discovered electrons?

• John Dalton

• Joseph John Thomson

• Ernest Rutherford

• James Chadwick

Which Greek Philosopher believed that matter is composed of tiny particles called atoms?

• Democritus

• Aristotle

• Phytagoras

• Plato

What is the charge of the nucleus?

• +

• -

• 0

Who's incorrect view of matter was predominate for over 2000 years?

• Democritus

• Dalton

• Aristotle

• Bohr

Who created the solid sphere model of the atom?

• Dalton

• Thomson

• Bohr

• Rutherford

The cathode-ray tube was used to discover the ____ by ____.

• Electron by Thomson

• Electron by Ruthefeord

• Proton by Thomson

• Proton by Rutherford

Jimmy Neutron is the nick name for which scientist that discovered the neutron?

• Chadwick

• Rutherford

• Bohr

• Thomson

• Moseley

Neils Bohr stated that electrons moved around the nucleus at fixed distances. This Bohr model was also called the

• Planetary model

• Plum Pudding model

• Nuclear model

• Quantum Mechanical Model

Which sub-atomic particle in the atom is responsible for the bonding and chemical properties (behavior) of the atom?

• Protons

• Electrons

• Neutrons

Which of the following places the models of the atom from most historic to most recent.

• solid sphere, plum pudding, nuclear, planetary, quantum mechanical

• solid sphere, plum pudding, planetary, quantum mechanical, nuclear

• plum pudding, nuclear, solid sphere, quantum mechanical, planetary

• plum pudding, solid sphere, planetary, quantum mechanical, nuclear