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Multiple Choice

The current model of the atom, where electrons exist within a range of possible locations, is called _____

• the chocolate chip cookie model
• the plum pudding model
• the quantum model
• the planetary model

Multiple Choice

What are the key differences between the atomic models proposed by Dalton, Thomson, Rutherford, Bohr, Sommerfeld, and Schrödinger?

• They differ in the number of particles

• They differ in the arrangement of particles

• They differ in the energy levels of electrons

• They differ in the existence of the nucleus

Multiple Choice

What does the term "átomo" signify according to Leucippus and Democritus?

• Indivisible particle

• Divisible particle

• Elemental substance

• Compound substance

Multiple Choice

What are the main points of John Dalton's atomic theory as described in the image?

• Atoms are indivisible and indestructible

• Atoms of different substances are identical

• Atoms can be created and destroyed

• Atoms are not spherical

Multiple Choice

Dalton's model of the atom failed because it could not explain :

• electric charges between matter

• how atoms could form molecules

• how particles could be so small

Multiple Choice

What scientist proposed this atomic model?

• Dalton

• Thomson

• Rutherford

• Bohr

Multiple Choice

What are the relative charges and masses of protons, neutrons, and electrons according to Thomson's atomic theory?

• Proton: +1, Neutron: 0, Electron: -1

• Proton: +1, Neutron: 1, Electron: 0

• Proton: 0, Neutron: +1, Electron: -1

• Proton: +1, Neutron: -1, Electron: 0

Multiple Choice

What is the conclusion drawn from the experiment involving cathode rays?

• There are positively charged particles

• There are negatively charged particles

• There are no charged particles

• There are only neutrons

Multiple Choice

What does the diagram illustrate about Thomson's atomic theory?

• The structure of an atom

• The behavior of electrons in a vacuum tube

• The discovery of protons

• The concept of atomic mass

Multiple Choice

Experiments with the use of cathode ray tubes led to the discovery of the

• electron

• protons

• nucleus

• orbital

Multiple Choice

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

Multiple Choice

What did W. Röentgen discover about X-rays in 1895?

• They can be deflected by magnetic fields

• They can pass through opaque materials

• They are visible to the naked eye

• They are composed of charged particles

Multiple Choice

What did Rutherford interpret about the structure of the atom based on his experiments?

• Most alpha particles passed through without deflection

• The nucleus is negatively charged

• Electrons are located in the nucleus

• Alpha particles are positively charged

Multiple Choice

What are the main differences between the Thomson and Rutherford models of the atom?

• Thomson model has a positive charge spread throughout the atom

• Rutherford model has electrons orbiting a dense nucleus

• Thomson model depicts electrons as negative particles

• Rutherford model shows a solid sphere structure

Multiple Choice

What is the flaw in Rutherford's model as described by the Theory of Electromagnetism?

• It does not account for electron emission

• It suggests electrons are stationary

• It ignores nuclear forces

• It claims particles do not emit energy

Multiple Choice

What is the relationship between the colors observed in the flames and the atomic structure?

• They indicate the temperature of the flame

• They are related to the energy levels of electrons

• They show the presence of different metals

• They have no relation to atomic structure

Multiple Choice

In his model of the atom, Bohr proposed that electrons move at fixed distances from the nucleus and that the energy of the electron is related to its orbit. What discovery contributed to the development of this atomic model?

• Electrons can flow freely through metals making metals good conductors.

• Elements have characteristic wavelengths of light emission and absorption.

• Noble gas elements are much less reactive than most other elements.

• Electrons exhibit properties of both particles and waves.

Multiple Choice

Which scientist developed the model of the atom shown?

• Chadwick

• Thomson

• Rutherford

• Bohr

Multiple Choice

Qual é a correlação correta entre os cientistas e suas ideias sobre a composição do átomo?

• apenas nos itens I e II

• apenas no item II

• apenas nos itens I e III

• apenas nos itens II e III

• apenas no item III

Multiple Choice

The Bohr model is used to demonstrate

• neutrons 
• electron energy levels
• proton energy levels

Multiple Choice

Which model of the atom describes the location of electrons as probable within a dense "cloud" surrounding the nucleus of an atom?

• The Cannonball

  Model

• The Plum Pudding Model

• The Planetary Model

• The Quantum Mechanical Model

• The Nuclear Model

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