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Chapter 3 Test Review

Chapter 3 Test Review. Which of the following are ions and which are atoms? Ca 2+ K Rn O 2-. Ions – Ca 2+ O 2- Atoms – K Rn. What are the different isotopes of hydrogen called?. Hydrogen, Dueterium , Tritium. What are the different types of radiation and their symbols?.

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Chapter 3 Test Review

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  1. Chapter 3 Test Review

  2. Which of the following are ions and which are atoms? • Ca2+ • K • Rn • O2- Ions – Ca2+ O2- Atoms – K Rn

  3. What are the different isotopes of hydrogen called? Hydrogen, Dueterium, Tritium

  4. What are the different types of radiation and their symbols? Alpha 4 He Beta 0 e- Gamma 0 Y 2 -1 0

  5. Which subatomic particles have a charge? Protons – positive Electrons - negative

  6. What did JJ Thomson study and discover? Electrons – because the cathode ray moved towards the positive node

  7. What did Rutherford study and discover? He discovered positive protons in the nucleus

  8. What was James Chadwick’s contribution? The neutron and its contribution to atomic mass

  9. All atoms contain a unique number of ______________. protons

  10. Where would you find electrons? Electron cloud – surrounding the nucleus

  11. What is an isotope? Atoms of the same element with different #’s or neutrons

  12. Where do you find the radioactive elements? After bismuth

  13. What is found in the nucleus? Protons and neutrons

  14. What is an ion? An atom that has gained or lost electrons – has a charge

  15. A cation has a __________ charge. Positive

  16. Which form of radiation is stopped by clothing? Alpha

  17. Complete the chart 20 20 20

  18. Write the chemical symbol for an ion with 35 protons and 36 electrons. Br-1

  19. Complete the chart: 87 Sr+2 ion 38

  20. Write the alpha decay for: 223Fr 87 4 He + 219 At 2 85

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