Act 8. Quiz. Atomic Theory

He proposed the word “atom”, which means uncuttable.

• Democritus

• Dalton

• Diogenes

• Diagoras

This scientist proposed an atomic model with atoms seen as indivisible spheres. The difference between elements was the size.

• Dalton

• Thomson

• Rutherford

• Bohr

In this experiment, a ray of energy was conducted in a Crooks tube, having a magnetic field in one side. The rays were deviated towards the positive pole of the magnetic field.

• Cathode rays experiment

• Gold foil experiment

• Miller-Urey experiment

• Ice pail experiment

In this atomic model, the atom was considered a positive sphere, and the electrons were negative incrustations within.

• Plum Pudding Model

• Billiard Model

• Planetary Model

• Water Droplets Model

What was Thomson’s major discovery?

• That the atom was a positive sphere.

• That there were negative charges in everything (electrons).

• That there were neutral particles in the nucleus (neutrons).

• That electrons are organized in levels of energy.

What was the conclusion on the Gold Foil experiment?

• Alpha particles are positive particles.

• The electrons are present in every matter and have a negative charge.

• The atom has a super dense and positive nucleus, where all the mass of the atom is.

• The atom has a well-distributed positive charge.

What’s not a statement of Rutherford’s Atomic Model?

• There is a positive nucleus, where almost all the atom’s mass is.

• The electrons are like planets, orbitating the nucleus.

• There is a neutral charge in all atoms.

• There are neutral particles in the nucleus, preventing the positive particle rejection.

Explain at least one problem with the Planetary Model.

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In which atomic model where the energy levels described?

• Sommerfeld’s

• Bohr’s

• Schrödinger’s

• Rutherford’s

In which atomic model where the energy sublevels described?

• Sommerfeld’s

• Bohr’s

• Schrödinger’s

• Rutherford’s