4
QuizMultiple Choice

Hypotheses, Theories, and Laws

Question 4 • *26-27 CFISD TX-Chemistry A CR

Gina summarizes the ideas that led to the current atomic model. 1. Dalton developed the theory that all matter is made of atoms.2. Thomson discovered that atoms contain electrons.3. Rutherford discovered that atoms have a nucleus.4. Schrödinger developed the electron cloud model.5. Bohr developed the model in which electrons orbit the nucleus.Which change should Gina apply to correct the summary?

Answer
A
Switch 1 and 5.
B
Switch 2 and 3.
C
Switch 4 and 5.
D
Switch 3 and 1.

Explanation

Bohr’s model, developed before Schrödinger’s, described electrons orbiting the nucleus. Schrödinger later developed the electron cloud model, which describes where electrons are likely to be found. Gina should switch statements 4 and 5, so the ideas are in the correct historical order.

AI-written and checked against the verified answer.

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