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General Science: Atomic Structure Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. To find the number of neutrons in an atom you can use the equation _____- _____.

Question 2 2. The atomic mass of hydrogen is:

Question 3 3. Titanium has 22 electrons and 26 neutrons. What can we conclude about Titanium?

Question 4 4. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 5 5. If you know the atomic number and the atomic mass of an atom then you should be able to figure out...

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Question 6 6. ALL atoms of the same element have:

Question 7 7. The Bohr model of the atom:

Question 8 8. If Argon is a noble gas and its atomic number is 18, how many electrons can be found in the valence level?

Question 9 9. Why should you avoid looking directly at magnesium burning?

Question 10 10. Magnesium has three common isotopes. Based on its average atomic mass, which is the most common?

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Question 11 11. How many neutrons does the following isotope have?

Question 12 12.

Given the following information, which element(s) are most likely to lose electrons?

I. Iodine is a member of Group VII (halides).

II. Strontium is located in the second column of the periodic table.

III. Selenium has six valence electrons.

Question 13 13. A proton can be found in which of the following?

Question 14 14. Protons are made of what?

Question 15 15. If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?

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Question 16 16. Which of the following statements is true?

Question 17 17. Beryllium has an atomic number of 4 and an atomic mass of 9. What can we conclude from this?

Question 18 18.

If the isotope of an element has 17 protons and 19 neutrons, what is this element and what is its atomic mass?

Hint: the atomic number is the number of protons.

Question 19 19. Nitrogen has an atomic number of 7 and it has 7 neutrons. What is the atomic mass of nitrogen?

Question 20 20. When an electron moves from an excited state to a ground state, it will _____.

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Question 21 21. Which of the following are NOT found in the atomic nucleus?

Question 22 22. How are isotopes of the same element similar?

Question 23 23. Neon (Ne) has an atomic number of 10. How many neutrons are in Ne-20?

Question 24 24. The average atomic mass or atomic weight found on the periodic table is _____.

Question 25 25. Which of the following is an example of when an electron absorbs energy?

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Question 26 26. X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?

Question 27 27. A proton can be formed by the radioactive breakdown of which of the following?

Question 28 28. What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?

Question 29 29. What is the maximum number of electrons that can occupy the 2s orbital?

Question 30 30. What is the correct electron configuration for an atom of sodium (Na)?

General Science: Atomic Structure Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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