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Atomic Structure: AP Chemistry Lesson Plans 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 mass number indicates:

Question 2 2. What did Rutherford discover in his gold foil experiment?

Question 3 3. Which is the symbol for the element that contains six electrons in each of its neutral atoms?

Question 4 4. How many neutrons does the most common isotope of hydrogen have?

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. 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?

Question 7 7. Which letter orbital corresponds to l = 2?

Question 8 8. Why should you avoid looking directly at magnesium burning?

Question 9 9. Which scientist used the oil drop experiment to measure the charge of individual electrons?

Question 10 10. ALL atoms of the same element have:

Page 3

Question 11 11. The average atomic mass or atomic weight found on the periodic table is _____.

Question 12 12. What is the principal quantum number for the last electron that is added to potassium?

Question 13 13. Which quantum number indicates the position of the orbital?

Question 14 14. Which block is manganese (Mn) located in?

Question 15 15. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

Page 4

Question 16 16. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 17 17. Why did Democritus disagree with Aristotle?

Question 18 18.

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.)

Question 19 19. What is the correct electron configuration for an atom of sodium (Na)?

Question 20 20. How are isotopes of the same element similar?

Page 5

Question 21 21. Which of the following sets of quantum numbers CAN exist?

Question 22 22. Which of the following is an example of when an electron absorbs energy?

Question 23 23. Which of the following has a positive charge and a mass of one amu?

Question 24 24. The Bohr model of the atom:

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

Page 6

Question 26 26. What is the largest principal quantum number that a calcium electron can have?

Question 27 27. Which element has a mass number of 12 and contains 6 neutrons?

Question 28 28. Particles that are found in the atomic nucleus are:

Question 29 29.

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?

(The molecular mass of carbon is 12 g/mol.)

Question 30 30. When an electron moves from an excited state to a ground state, it will _____.

Atomic Structure: AP Chemistry Lesson Plans 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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