Atomic Models

Which of these models suggests that an atom looks like "plum-pudding" with electrons imbedded in a positively charged sphere?

• Dalton's model

• Thompson's model

• Bohr's model

• Schrödinger's model

Dalton's model suggested that atoms are like...

• solid spheres

• planets orbiting the sun

• orbital clouds surrounding a nucleus

• plum-pudding

Multiple Select: Schrödinger's model is the modern model that we accept today. He said that electrons...

• are embedded in a positively charged sphere

• orbit around the nucleus like planets

• move around the nucleus in electron clouds

• are more likely to be found near the nucleus than far away from it

_____ said that electron's orbit the nucleus like planets, with each orbit having a specific size and energy associated with it.

• JJ Thompson

• John Dalton

• Ernest Rutherford

• Neils Bohr

Bohr says that the energy of an electron's orbit is related to the size of the orbit. The lowest energy is found in the...

• smallest orbit

• largest orbit

• second orbit

• third orbit

According to the Quantum Mechanical Model, a(n) ______ is a region in an atom with a high probability of containing electrons.

• orbit

• shell

• orbital

• electron zone

Bohr's planetary model suggests that if an electron gains energy, it will...

• move slower around its current orbit

• move in to a lower orbit

• move faster around its current orbit

• move out to a larger orbit

________ said that electron's don't move in orbits, but in clouds. Each cloud is associated with a specific energy level.

• Thompson

• Rutherford

• Bohr

• Schrödinger

Ernest Rutherford theorized that atoms are mostly _______ with his famous gold foil experiment.

• positive

• negative

• empty space

• made of the nucleus

The model of the atom has changed over time

• True

• False