23
QuizMultiple Choice

Evaluating Scientific Explanations — Unit test

Question 23 • Physical Science Sem 1 (2003310) BCPS 2026-27

What is a main reason why the scientific model of atoms is considered a theory rather than a law?

Answer
A
It has been proven as a fact.
B
It has been changed over time.
C
It predicts but does not explain.
D
It has stayed the same for a long time.

Explanation

Scientific theories are evidence-based explanations that can be revised when new evidence becomes available. The atomic model has changed as scientists learned more about atoms, so “It has been changed over time” is the best answer. A law describes a pattern in nature; it does not simply mean a theory has been proven as an unchangeable fact.

AI-written and checked against the verified answer.

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