37
QuizMultiple Choice

Elements, Compounds, and Mixtures — Unit test

Question 37 • CA-Chemistry A

Which describes Ernest Rutherford’s experiment?

Answer
A
Positive particles are fired at gold foil. Most bounce back, but some pass through.
B
Negative particles are fired at gold foil. Most bounce back, but some pass through.
C
Positive particles are fired at gold foil. Most pass through, but some bounce back.
D
Negative particles are fired at gold foil. Most pass through, but some bounce back.

Explanation

Rutherford’s gold-foil experiment fired positively charged alpha particles at a very thin sheet of gold. Most particles passed straight through, showing that atoms are mostly empty space, while a small number bounced back after hitting the tiny, dense, positively charged nucleus. Therefore, the correct choice is “Positive particles are fired at gold foil. Most pass through, but some bounce back.”

AI-written and checked against the verified answer.

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