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Radioactivity and Atoms Quiz

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Questions and Answers

Which type of radioactive radiation consists of high-energy rays with no charge?

Beta (β) rays

Delta (δ) rays

Gamma (γ) rays (correct)

Alpha (α) rays

What is the mass of alpha (α) particles compared to a hydrogen atom?

Half the mass of a hydrogen atom

Twice the mass of a hydrogen atom

Four times the mass of a hydrogen atom (correct)

Equal to the mass of a hydrogen atom

According to the text, which type of radiation consists of electrons coming from inside the nucleus?

Delta (δ) rays

Gamma (γ) rays

Alpha (α) rays

Beta (β) rays (correct)

Who proposed the 'plum-pudding' model of an atom?

J.J. Thomson Signup and view all the answers

What are alpha (α) particles made up of?

Positively charged particles Signup and view all the answers

Which type of rays were deflected by oppositely charged metal plates?

Alpha (α) rays Signup and view all the answers

What did Ernest Rutherford work with Thomson to test in 1911?

'Plum-pudding' model of an atom Signup and view all the answers

What is the charge of beta (β) particles?

-1 Signup and view all the answers

What is the magnitude of the charge of alpha (α) particles compared to an electron?

Twice the magnitude of the charge of an electron Signup and view all the answers

What did Thomson propose for the distribution of electrons and protons in his 'plum-pudding' model?

They were randomly distributed in a positively charged cloud. Signup and view all the answers