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image1.emf Graded Assignment SCI304A: Honors Chemistry | Unit 2 | Lesson 15: Unit Test
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Graded Assignment
Unit Test, Part 2
Answer the questions below. When you are finished, submit this assignment to your teacher by the due date for full credit.
(5 points)
Score
1. An atom of silicon has a mass number of 28 and an atomic number of 14. How can you determine how many protons and how many neutrons are in this atom?
Answer:
(5 points)
Score
2. Electron A falls from energy level X to energy level Y and releases blue light. Electron B falls from energy level Y to energy level Z and releases red light. Which transition, from X to Y or from Y to Z, has a greater energy difference? Explain your answer and how you arrived at it. Use a diagram of the electromagnetic spectrum.
Answer:
Your Score
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