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

Question 2 2. How are isotopes of the same element similar?

Question 3 3. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 4 4. Which scientist is credited with discovering the charge of an electron?

Question 5 5. Why did Democritus disagree with Aristotle?

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Question 6 6. A tenth of a mole of pennies contains how many pennies?

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

Question 8 8. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

Question 9 9. A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?

Question 10 10. Who first coined the term atom, meaning indivisible?

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Question 11 11. What is the largest principal quantum number that a calcium electron can have?

Question 12 12. Which letter orbital corresponds to l = 2?

Question 13 13. Which of the following has a positive charge and a mass of one?

Question 14 14. Particles that are found in the atomic nucleus are:

Question 15 15. How many neutrons does the most common isotope of hydrogen have?

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Question 16 16. A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

Question 17 17. The mass number indicates:

Question 18 18. What did Rutherford discover in his gold foil experiment?

Question 19 19. The average atomic mass or atomic weight found on the periodic table is _____.

Question 20 20. What does the atomic number represent?

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Question 21 21. Which quantum number indicates the position of the orbital?

Question 22 22. A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?

Question 23 23. The Bohr model of the atom:

Question 24 24. Which element has a mass number of 12 and contains 6 neutrons?

Question 25 25. Which of the following was the instrument used for the discovery of the electron?

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Question 26 26. If only one type of atom makes up a substance, what can you call this substance?

Question 27 27. X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?

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. Which of the following sets of quantum numbers CAN exist?

Question 30 30. Which block is manganese (Mn) located in?

Understanding Atomic Structure Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "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. You will lose your work if you close or refresh this page. Good luck!

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