Copyright

Modern Physics 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. What does the atomic number represent?

Question 2 2. An element is defined by the number of:

Question 3 3. Who first coined the term atom, meaning indivisible?

Question 4 4. The average atomic mass or atomic weight found on the periodic table is _____.

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

Page 2

Question 6 6. Which of the following defines the photoelectric effect?

Question 7 7. Which of the following was the instrument used for the discovery of the electron?

Question 8 8. What did Rutherford discover in his gold foil experiment?

Question 9 9. Who was the first to observe and publish observations about the photoelectric effect?

Question 10 10. The mass number indicates:

Page 3

Question 11 11.

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.)

Question 12 12. Particles that are found in the atomic nucleus are:

Question 13 13. Who explained the photoelectric effect?

Question 14 14. How many neutrons does the most common isotope of hydrogen have?

Question 15 15. What is the largest principal quantum number that a calcium electron can have?

Page 4

Question 16 16. Which of the following has a positive charge and a mass of one amu?

Question 17 17. Which of the following exchange particles are responsible for the electromagnetic force?

Question 18 18. What is the momentum of a photon of light of wavelength 5.5 x 10^-7 meters?

Question 19 19. X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?

Question 20 20. The nucleus of an atom:

Page 5

Question 21 21.

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.)

Question 22 22. Why did Democritus disagree with Aristotle?

Question 23 23. Which of the following is an example of something the standard model of particle physics CANNOT explain?

Question 24 24. What is the correct electron configuration for an atom of sodium (Na)?

Question 25 25. Which letter orbital corresponds to l = 2?

Page 6

Question 26 26. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Question 27 27. What is wave-particle duality?

Question 28 28. Which of these is an observation Einstein made in the photoelectric effect experiment?

Question 29 29. A tenth of a mole of pennies contains how many pennies?

Question 30 30. What is the energy of a photon of light of frequency 4 x 10^14 Hz?

Modern Physics 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!

NY Regents Exam - Physics: Test Prep & Practice  /  Science Courses
Support