MTLS 1M03 Assignment 1 Attempt2

MTLS 1M03 Assignment 1 Attempt2 - Learning System Quiz...

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Name: SIAMAK KIANI Attempt: 2 / 3 Out of: 15 Started: January 19, 2009 11:50pm Finished: January 20, 2009 1:19am Time spent: 1 hr, 28 min., 22 sec. Read these instructions before you start this assignment: All questions in this and future assignments relate to what we've been learning in class. Use the lecture notes and textbook as references. If you get stuck, remember that the TA's at the Drop-In Centre can help you, as well as your professor's office hours. The hours and location of the Drop-In Centre are given on the " Getting Help " page. Remember that you don't have to do all the questions at the same time. Save your answers as you go. You can leave and log back in later. The answers you saved will still be there. When you're done all the questions, don't forget to use the Finish button. NOTE: all angles should be entered into trig functions in radians. Question 1 (1 point) What is the coordination number of a BCC (body-centred cubic) crystal structure? Student response: Correct Response Student Response Answer Choices a. 6 b. 8 c. 10 d. 12 e. None of the above. General feedback: See page 36 of the text. Score: 1 / 1 Question 2 (1 point) Which of the following are examples of materials having HCP (hexagonal close-packed) crystal structures at room temperature? Student response: Correct Response Student Response Answer Choices a. cadmium, cobalt, zinc b. chromium, tantalum, tungsten c. gold, aluminum, copper General feedback: See page 37 of the text. Score: 1 / 1 Question 3 (1 point) True or False: Noncrystalline materials do not display the phenomenon of allotropy (polymorphism). Student response: Percent Value Correct Response Student Response Answer Choices 100.0% a. True 0.0% b. False General feedback: Since a noncrystalline material does not have a defined crystal structure, it cannot have more than one crystal structure - which is the definition of allotropy. Score:
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MTLS 1M03 Assignment 1 Attempt2 - Learning System Quiz...

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