The Atom: Theory and Parts

Which of the following scientists was the first ever to suggest matter was composed of atoms?

• Democritus

• Thomson

• Aristotle

• Dalton

Which scientist is credited with discovering electrons existed inside an atom?

• Dalton

• Thomson

• Rutherford

• Bohr

Which scientist used the gold foil experiment to make his discoveries about the atom?

• Thomson

• Rutherford

• Bohr

• Schrodinger

Which of the following forces glues protons and neutrons together to form a nucleus?

• strong force

• electromagnetic force

• gravity

• weak force

Which of the following particles are NOT located in the nucleus?

• Quarks

• Protons

• Neutrons

• Electrons

What is the name of Thomson's model? Why did they chose that name?

• Planetary Model, he said electrons orbit the nucleus like planets

• Empty Space Model, he said the atom is mostly empty space

• Quantum Mechanical Model, it is built on the principals of quantum physics

• Plum Pudding Model, he said the atom had positive pudding material on the inside

Which of the following was NOT included in Bohr's ideas about the atom but is included in our atom model today?

• electrons orbit the nucleus like planets around the sun

• Electrons can absorb and release quantums of energy

• Electrons are arranged in energy levels

• An atom's nucleus contains both protons and neutrons

Which of the following is NOT true about our modern theory of the atom?

• Electrons orbit the nucleus like planets around the sun

• The atom is mostly empty space with protons and neutrons in the center

• Electrons absorb and release quantums of energy as they move away and towards the nucleus

• Electrons are placed in orbitals and energy levels within the electron cloud based on the quantums of energy they have.

Which of the following models describes best our modern day view of the atom?

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• 
• 
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Which particle has a -1 charge?

• neutrons

• protons

• quarks

• electrons