Atomic Structure Review

What did Ernest Rutherford's Gold foil experiment reveal about the atom?

• The atom is divisible

• The mass of the atom and its positively charged particles were in the nucleus

• The number of protons is unique to each element

• Electrons are negative particles that travel in fixed orbits

According to John Dalton's Solid Sphere model, what is an atom?

• A solid sphere that can't get any smaller

• A positively charged sphere with negative particles embedded throughout

• A dense center made of protons and neutrons

• A negatively charged particle outside of the nucleus

According to Niels Bohr's Bohr Model, where do electrons travel?

• In fixed orbits around the positively charged nucleus

• In the electron cloud surrounding the nucleus

• In shells or energy levels

• In the outermost energy level

Categorize the following as parts of the "Nucleus" or "Electron Cloud"

Groups:

(a) Nucleus

,

(b) Electron cloud

• Made of protons and neutrons

• Negatively charged

• Dense center

• Where the mass of the atom is located

• Broken down into regions of space called "shells" or energy levels"

• Positively charged

• Where the volume of the atom is located

• Space surrounding the nucleus

Match the following subatomic particles to their abbreviations:

• p+

• Electron

• e-

• Proton

• n0

• Neutron

Match the following:

• electron

• negative particle outside fo the nucleus in the electron cloud

• proton

• neutral particles in the nucleus with protons

• neutron

• positive particle in the nucleus

Categorize the following forces that hold atoms together:

Groups:

(a) Attractive Forces

,

(b) Repulsive forces between electrons

,

(c) Repulsive force between protons

• protons want to be as far apart from each other as possible

• opposite charges that attract each other

• between nucleus and electron cloud

• electrons want to be far away from each other

• between the electrons

• gives the electron cloud volume

• an insane amount of energy holds the nucleus together becasue of this

• What holds the atom together

Protons are found in the nucleus

• True

• False

Neutrons are found outside of the nucleus

• True

• False

Electrons are found outside of the nucleus

• True

• False