CHES P4 Atomic Structure Starter Questions

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

2. Describe the structure of an atom?

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

4. What is the unit for radioactivity decay?

• Gray

• $s^{-1}$

• Sievert

• Becquerel

5. Describe the alpha scattering experiment

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"?