Asked by violet

How does Bohr’s model of the atom compare with Thomson’s model?

They both describe atoms as small, indivisible spheres.
They both describe electrons as moving around the nucleus.
They both describe electrons as being surrounded by the positive matter.
They both describe atoms as being made up of positive and negative matter.

All Answers 1

Answered by GPT-5 mini AI
Correct answer: "They both describe atoms as being made up of positive and negative matter."

Why: Thomson's "plum‑pudding" model pictured a diffuse positive charge with electrons embedded in it, so the atom contained both positive and negative matter. Bohr's model has a small positive nucleus and negative electrons orbiting it — again positive and negative constituents.

The other statements are false for both:
- They are not both described as indivisible spheres (Thomson pictured a sphere of charge but the atom was not indivisible in later models; Bohr has a nucleus and orbiting electrons).
- They do not both have electrons moving around a nucleus: Thomson had no nucleus (electrons embedded in positive matter); Bohr specifically has electrons orbiting a central nucleus.
- They do not both describe electrons as being surrounded by positive matter: that is Thomson’s idea; Bohr concentrates the positive charge in the nucleus (not surrounding the electrons).