Question

question 7 (1 point)
(02.01 lc)
what is true of neutrons?
○ a they have no charge and are located inside the nucleus.
○ b they have no charge and are located outside the nucleus.
○ c they are negatively charged and are located inside the nucleus.
○ d they are negatively charged and are located outside the nucleus.

question 8 (1 point)
(02.01 lc)
what is true of electrons?
○ a they are positively charged and located inside the nucleus.
○ b they are positively charged and located outside the nucleus.
○ c they are negatively charged and located inside the nucleus.
○ d they are negatively charged and located outside the nucleus.

question 9 (1 point)
(02.01 mc)
the modern atomic theory has been updated over the years as new observations of the atom have been made. what do these changes say about the strength of the modern atomic theory?
○ a the changes make the theory weaker because they demonstrate that the scientific community can’t agree on the properties of atoms.
○ b the changes make the theory weaker because they demonstrate that the original atomic theory was flawed, so all resulting theories are also flawed.
○ c the changes make the theory stronger because it has been tested and edited multiple times, making it more durable.
○ d the changes make the theory stronger because each time the theory is changed, it becomes more popular.

Explanation:

Question 7

Neutrons are subatomic particles with no electric charge (neutral) and are located inside the atomic nucleus (along with protons). Option a states they have no charge and are inside the nucleus, which matches neutron properties. Option b says outside (neutrons are in nucleus), c says negative (neutrons are neutral), d says negative and outside (incorrect).

Electrons are subatomic particles with a negative charge and are located in electron clouds/orbitals outside the atomic nucleus (nucleus has protons and neutrons). Option d states they are negatively charged and outside the nucleus, which is correct. Option a (positive, inside) is protons, b (positive, outside) wrong, c (negative, inside) wrong.

Scientific theories (like modern atomic theory) are strengthened by being updated with new evidence/observations. Updating means it’s tested, refined, and becomes more durable (accurate). Option c: changes make it stronger as it’s tested/edited multiple times (matches scientific method: theories evolve with evidence). Option a: changes don’t weaken (community agrees via evidence), b: original theory was a start, updates fix, not flaw all, d: popularity isn’t strength (it’s about evidence).

Answer:

a. They have no charge and are located inside the nucleus.

Question 8