Development of the Atomic Model Quiz

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Who is credited with the development of the Solid Sphere Model?

John Dalton

What observation led John Dalton to propose the Solid Sphere Model?

Matter is always combined in fixed ratios based on weight or volume.

Which scientist developed the Plum Pudding Model of the atom?

J.J. Thomson

What did J.J. Thomson's Plum Pudding Model propose about the atom?

<p>The existence of negatively charged electrons floating inside a sea of positively charged matter.</p> Signup and view all the answers

What observation by John Dalton forms a key principle of the Solid Sphere Model?

<p>Atoms of different elements combine in fixed, whole-number ratios when forming compounds.</p> Signup and view all the answers

For what achievement was J.J. Thomson awarded a Nobel Prize in Physics?

<p>Discovery of electrons as negatively charged particles.</p> Signup and view all the answers

Who experimented on cathode ray tubes and concluded that the cathode ray is made up of electrons?

<p>J.J. Thomson</p> Signup and view all the answers

Which model proposed a spherical atomic structure with a nucleus at the center and electrons revolving around the nucleus in circular orbits?

<p>The Nuclear Model</p> Signup and view all the answers

Who noticed the electrons’ position in Rutherford’s model and modified it to create a model with fixed electron orbits based on defined energy levels?

<p>Niels Bohr</p> Signup and view all the answers

In which experiment were alpha particles beamed through a gold foil, leading to the conclusion that an atom is mostly empty with a tiny, dense, positively-charged nucleus?

<p>The Gold Foil Experiment</p> Signup and view all the answers

Who hypothesized that the wave behavior of the electron is thought of as undulations of matter and proposed the Planetary Model of the atom?

<p>Niels Bohr</p> Signup and view all the answers

Which model was rejected due to the inability to explain the stability of the atom and the loss of energy by electrons falling into the nucleus?

<p>The Nuclear Model</p> Signup and view all the answers

Who won the Nobel Prize in Chemistry in 1908 for pioneering studies in radioactivity and the atom?

<p>Ernest Rutherford</p> Signup and view all the answers

Which scientist began to think about explaining movement of an electron as a wave, leading to what is referred to as energy levels or electron shells?

<p>Schrodinger</p> Signup and view all the answers

Why was the Plum Pudding Model rejected?

<p>It was unable to explain some observed phenomena and experimental results.</p> Signup and view all the answers

What was concluded from the Gold Foil Experiment?

<p>An atom is mostly empty with a tiny, dense, positively-charged nucleus.</p> Signup and view all the answers

John Dalton's Solid Sphere Model proposed that atoms of different elements contain different types of atom.

<p>False</p> Signup and view all the answers

J.J. Thomson was awarded a Nobel Prize in Chemistry in 1908 for pioneering studies in radioactivity and the atom.

<p>False</p> Signup and view all the answers

J.J. Thomson's Plum Pudding Model suggested that atoms can neither be created nor destroyed.

<p>False</p> Signup and view all the answers

John Dalton's observation that matter is always combined in fixed ratios based on weight or volume led to the development of the Plum Pudding Model.

<p>False</p> Signup and view all the answers

J.J. Thomson's Plum Pudding Model builds strongly upon the work of other scientists.

<p>False</p> Signup and view all the answers

The Plum Pudding Model proposed that atoms of different elements combine in fixed, whole-number ratios when forming compounds.

<p>False</p> Signup and view all the answers

Niels Bohr was awarded the Nobel Prize in Physics in 1922.

<p>False</p> Signup and view all the answers

The Gold Foil Experiment concluded that an atom is mostly empty with a tiny, dense, negatively-charged nucleus.

<p>False</p> Signup and view all the answers

J.J. Thomson won the Nobel Prize in Chemistry in 1908.

<p>False</p> Signup and view all the answers

Ernest Rutherford's nuclear model proposed that electrons revolve around the nucleus in circular orbits.

<p>True</p> Signup and view all the answers

The Planetary Model proposed by Niels Bohr hypothesized that electrons move around the nucleus at any distance based on the defined amount of energy they have.

<p>False</p> Signup and view all the answers

The Plum Pudding Model was rejected due to its inability to explain the stability of the atom and the loss of energy by electrons falling into the nucleus.

<p>True</p> Signup and view all the answers

The cathode ray is composed of protons according to J.J. Thomson's conclusion.

<p>False</p> Signup and view all the answers

The Quantum Mechanical Model explained the weak position of the electrons and only showed the nucleus’ position.

<p>False</p> Signup and view all the answers

In the Gold Foil Experiment, most of the alpha particles were deflected by the foil and hit a spot on a screen placed off to one side.

<p>False</p> Signup and view all the answers

The Schrodinger equation provides a way to calculate the wave function of a system according to Niels Bohr.

<p>False</p> Signup and view all the answers

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