Understanding Atomic Structure: Help and Review 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. What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?

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

Question 3 3. Which of the following was the instrument used for the discovery of the electron?

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.)

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

Question 8 8. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 9 9. The Bohr model of the atom:

Question 10 10. Which block is manganese (Mn) located in?

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Question 11 11. Which of the following has a positive charge and a mass of one amu?

Question 12 12. A tenth of a mole of pennies contains how many pennies?

Question 13 13. An element is defined by the number of:

Question 14 14. Which quantum number indicates the position of the orbital?

Question 15 15. The average atomic mass or atomic weight found on the periodic table is _____.

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Question 16 16. How are isotopes of the same element similar?

Question 17 17. What did Rutherford discover in his gold foil experiment?

Question 18 18. Which scientist is credited with discovering the charge of individual electrons?

Question 19 19. What is the principal quantum number for the last electron that is added to potassium?

Question 20 20. Why did Democritus disagree with Aristotle?

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Question 21 21. What does the atomic number represent?

Question 22 22. If only one type of atom makes up a substance, what can you call this substance?

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

Question 24 24. Why should you avoid looking directly at magnesium burning?

Question 25 25.

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.)

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Question 26 26. Which is the symbol for the element that contains six electrons in each of its neutral atoms?

Question 27 27. Who first coined the term atom, meaning indivisible?

Question 28 28.

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

Question 30 30. The mass number indicates:

Understanding Atomic Structure: Help and Review 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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