Atomic Structure Quiz

What is the mass of a neutron compared to a proton?

• Neutrons are lighter than protons.

• Neutrons have no mass.

• Neutrons are heavier than protons.

• Neutrons have a mass equal to protons.

What is the primary difference between isotopes of the same element?

• They have different numbers of neutrons.

• They have different numbers of electrons.

• They have different atomic numbers.

• They have different numbers of protons.

In the quantum mechanical model of the atom, how are electrons represented?

• As waves in a probability cloud around the nucleus

• As stationary particles within the nucleus

• As particles in fixed orbits around the nucleus

• As particles that can only exist in one location

How does the structure of an atom influence its chemical behavior?

• The mass of the nucleus dictates the atom's charge.

• The size of the nucleus determines the atom's state of matter.

• The arrangement of electrons affects how atoms bond with each other.

• The number of neutrons determines the element's reactivity.

What defines the atomic number of an element?

• The total mass of the atom

• The number of electrons in the atom

• The number of neutrons in the nucleus

• The number of protons in the nucleus

Which of the following statements about electrons is true?

• They are found in the nucleus.

• They have a positive charge.

• They have a mass of 1 amu.

• They orbit the nucleus in specific energy levels.

What happens to the number of electrons in an atom when it becomes an ion?

• It gains protons.

• It loses neutrons.

• It gains or loses electrons.

• It remains unchanged.

Which of the following best describes the relationship between protons and electrons in a neutral atom?

• The number of protons equals the number of electrons.

• The number of protons is less than the number of electrons.

• The number of protons is greater than the number of electrons.

• Protons and electrons are not related.

In the Bohr model of the atom, how are electrons depicted?

• As randomly distributed throughout the atom

• As fixed in place within the nucleus

• As orbiting the nucleus in distinct energy levels

• As particles in a cloud around the nucleus

What is the overall structure of an atom?

• A solid mass of protons and neutrons with no electrons

• A nucleus surrounded by a cloud of protons

• A dense nucleus containing protons and neutrons, surrounded by electrons

• Electrons clustered in the nucleus with protons and neutrons orbiting