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Atomic Structure & Nuclear Chemistry 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!

Page 1

Question 1 1. The nucleus of an atom:

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

Question 3 3. Which block is manganese (Mn) located in?

Question 4 4. How are isotopes of the same element similar?

Question 5 5.

A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

(The molecular mass of silicon is 28 g/mol.)

Page 2

Question 6 6. Which of the following types of radioactive isotopes are man-made or are a result of human activity?

Question 7 7. When an electron moves from an excited state to a ground state, it will _____.

Question 8 8. What is the correct electron configuration for an atom of sodium (Na)?

Question 9 9. What is the molar mass of glucose C6H12O6?

Question 10 10.

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.

Page 3

Question 11 11.

A piece of copper wire contains 5 moles of copper atoms. What is its mass?

(The molecular mass of copper is 63.5 g/mol.)

Question 12 12. What is the molar mass of NaOH?

Question 13 13. What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?

Question 14 14. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

Question 15 15. Which of the following statements is true?

Page 4

Question 16 16. The core of an atom is called the:

Question 17 17. How many neutrons does the most common isotope of hydrogen have?

Question 18 18. A tenth of a mole of pennies contains how many pennies?

Question 19 19. What is the molar mass of Na2CO3?

Question 20 20. Which of the following statements is false?

Page 5

Question 21 21. How many neutrons does the following isotope have?

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

Question 23 23. ALL atoms of the same element have:

Question 24 24. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 25 25. Why should you avoid looking directly at magnesium burning?

Page 6

Question 26 26. Which of the following are NOT found in the atomic nucleus?

Question 27 27. Which is the symbol for the element that contains six electrons in each of its neutral atoms?

Question 28 28. An oxygen atom has eight protons, eight neutrons, and eight electrons. Its atomic mass is:

Question 29 29. If Argon is a noble gas and its atomic number is 18, how many electrons can be found in the valence level?

Question 30 30.

A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?

(Aluminum has a molecular mass of 27 g/mol.)

Atomic Structure & Nuclear Chemistry 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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