Test #2 Review (PS.2 a-c)

What is the charge of a proton?

• Neutral

• Positive

• Negative

• No charge

Where are electrons located in the Bohr Atomic Model?

• In the nucleus

• In fixed orbits around the nucleus

• Randomly scattered throughout the atom

• In the electron cloud

Calculate the number of neutrons in an atom of Carbon-14, given that its atomic number is 6.

• 6

• 8

• 14

• 20

Which of the following best describes the electron cloud model?

• Electrons are in fixed orbits

• Electrons are found in a dense nucleus

• Electrons are in a cloud-like region around the nucleus

• Electrons are stationary

If an atom has 11 protons, 12 neutrons, and 11 electrons, what is its atomic mass?

• 11 amu

• 22 amu

• 23 amu

• 34 amu

Explain why the Bohr model is considered a simplified representation of an atom compared to the electron cloud model.

• The Bohr model shows electrons in fixed orbits, which is less accurate than the probabilistic nature of the electron cloud model.

• The Bohr model includes neutrons, which the electron cloud model does not.

• The Bohr model is more complex and detailed than the electron cloud model.

• The Bohr model does not include protons.

What is the charge of an electron?

• Positive

• Negative

• Neutral

• No charge

How many electrons does a neutral atom of oxygen have, given its atomic number is 8?

• 6

• 8

• 10

• 16

Which subatomic particle has the least mass?

• Proton

• Neutron

• Electron

• Nucleus

Using the periodic table, determine the number of protons in an atom of chlorine.

• 17

• 18

• 35

• 36