The Standard Model v1

A quantum of energy is the amount of energy required to do what?

• move a neutron out of the nucleus

• move an electron to the nucleus

• move an electron from one energy level to another

• move an electron from one atom to another

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NGSS.HS-PS3-1

Which scientist described the location of electrons as specific circular paths around a nucleus?

• Bohr

• Dalton

• Democritus

• Einstein

The Bohr model of the atom can be explained using what object?

• an elevator

• a ladder with unequally spaced rungs

• a plum pudding or chocolate chip cookie

• a marble

When did Schrodinger use equations to describe the motion of electrons in his model of the atom?

• 1805

• about 1925

• the times of ancient Greece

• 2005

Which model required the discovery of the electron?

• A.

• B.

Who is the Greek scientific thinker who first described the idea of an atom?

• Thomson

• Pericles

• Dalton

• Democritus

Rutherford conducted experiments to determine the structure of atoms. What material did he use?

• gold foil

• plum pudding

• a marble

• a model of the solar system

The general idea of the atomic model is ___.

• to describe the overall structure of an atom

• to measure the size of atoms

• to calculate the density of atoms

• to learn how to destroy atoms

In the standard model, the particle considered to be an elementary particle is a(n)

• proton
• neutron
• electron
• alpha particle

All atoms consist of mostly empty space.

• True
• False