CHES P4 Atomic Structure Starter Questions

1.What is the difference between an atom, ion and isotope?

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2. Describe the structure of an atom?

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3. What are the charges and relative masses of the particles found within the atom?

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4. What is the unit for radioactivity decay?

• Gray

• $s^{-1}$

• Sievert

• Becquerel

5. Describe the alpha scattering experiment

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6. What are the 3 types of radioactive particles

• Alpha, Omega and Gamma

• Alpha, Beta and Gamma

• Cosmic, X-rays and Gamma

• Micro waves, x rays and gamma rays

7. Which particle is the most ionising?

• Alpha

• Beta

• Gamma

• Neutron

8. What is meant by the term "half Life"?

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