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Atom 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. Which of the following scientists would say that atoms are like plum pudding, where the raisins are negative charges and the rest of the space has positive charges?

Question 2 2. Why did Rutherford conclude that gold atoms are mostly made of empty space?

Question 3 3. Which of the following describes Rutherford's model of the atom?

Question 4 4. Who stated that matter is made of atoms?

Question 5 5. What is the main difference between two isotopes of the same element?

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Question 6 6. Which magnetic quantum numbers are possible for p orbitals?

Question 7 7. The mass number of Nitrogen is 14, and its atomic number is 7. Therefore, Nitrogen has:

Question 8 8. The atomic number of oxygen is 8. Therefore, oxygen atom has:

Question 9 9. A(n) _____ is a representation of the arrangement of electrons in an atom of an element. 

Question 10 10. When working with atomic orbitals and quantum numbers, if n = 2, then l can be which of the following values?

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Question 11 11. The energy of an orbital is represented by which letter?

Question 12 12. The electron configuration of Carbon is 1s^2 2s^2 2p^2. How many electrons does Carbon have?

Question 13 13. How many atoms are there in two moles of helium gas?

Question 14 14. How many moles of silver (Ag) atoms are there in 3.80 x 10^24 silver atoms?

Question 15 15. Which of the following scientists discovered the electron charge using the 'oil drop experiment'?

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Question 16 16. Which is the symbol for the element that contains six electrons in each of its neutral atoms?

Question 17 17. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 18 18. What is the principal quantum number for the last electron that is added to potassium?

Question 19 19. Which letter orbital corresponds to l = 2?

Question 20 20. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

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Question 21 21. Which of the following is an example when an electron absorbs energy?

Question 22 22. 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 23 23. The nucleus of an atom:

Question 24 24. 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 25 25. Based on Avogadro's number, which of the following is NOT true?

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Question 26 26. How are isotopes of the same element similar?

Question 27 27. The average atomic mass or atomic weight found on the periodic table is _____.

Question 28 28. What did Rutherford discover in his gold foil experiment?

Question 29 29. Which of the following was the instrument used for the discovery of the electron?

Question 30 30. What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?

Atom 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!

Chemistry 101: General Chemistry  /  Science Courses
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