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Understanding the Atom & 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!

Page 1

Question 1 1. Why did Democritus disagree with Aristotle?

Question 2 2. Which of the following is a true statement about an anion?

Question 3 3. An element is defined by the number of:

Question 4 4. X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?

Question 5 5. Which of the following is a TRUE statement?

Page 2

Question 6 6. Which of the following is a definition of a polar covalent bond?

Question 7 7. How many elements are there?

Question 8 8. The average atomic mass or atomic weight found on the periodic table is _____.

Question 9 9. Which of the following is true about nonpolar covalent bonds?

Question 10 10. What did Rutherford discover in his gold foil experiment?

Page 3

Question 11 11. Which of the following is a true statement about a cation?

Question 12 12. Which of the following is a definition of a nonpolar covalent bond?

Question 13 13. Which of the following is made up of one or more elements?

Question 14 14. Which of the following is a TRUE statement?

Question 15 15. Which of the following statements are true regarding electronegativity ?

Page 4

Question 16 16. Which of the following best describes this molecular formula H2O? (Note the 2 is subscripted)

Question 17 17. What is the principal quantum number for the last electron that is added to potassium?

Question 18 18. Who first coined the term atom, meaning indivisible?

Question 19 19. What is the correct definition of an ion?

Question 20 20. Which of the following sets of quantum numbers CAN exist?

Page 5

Question 21 21. 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 22 22. Which of the following best describes this molecular formula 3H2O? (Note the 2 after the hydrogen atom is subscripted)

Question 23 23. Which of the following is true about polar covalent bonds?

Question 24 24. Which block is manganese (Mn) located in?

Question 25 25. Which is the symbol for the element that contains six electrons in each of its neutral atoms?

Page 6

Question 26 26. Which of the following is a true statement?

Question 27 27. Which scientist used the oil drop experiment to measure the charge of individual electrons?

Question 28 28. Which of the following has a positive charge and a mass of one amu?

Question 29 29. The mass number indicates:

Question 30 30. Which of the following is a true statement when writing the molecular formula for an ionic compound?

Understanding the Atom & 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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