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Introduction To Material Science. Question Paper

Introduction To Material Science.

Course:Bachelor Of Engineering In Electrical And Electronics Engineering

Institution: Moi University question papers

Exam Year:2011

TEC 111: INTRODUCTION TO MATERIAL SCIENCE.

Review questions.

1. What is the distinction between the valence electrons of an atom and the remainder of the orbital electrons?

2. What is the distinction among an atom, a positive ion, and a negative ion?

3. How does a molecule differ from an atom?

4. What is the significance of the shell concept of atomic structure in determining whether and element is likely to be a good electric conductor?

5. Argon has an atomic number of 18 (18 orbital electrons). With reference to the shell structure of an atom, discuss the probable chemical activity of argon.

6. Silver has an atomic number of 47. Show how the shell structure of an atom supports the observation that silver is an excellent electric conductor.

7. What is the significance of the term free electron?

8. What is the relationship between free electrons and a metal''s ability to act as an electric conductor?

9. Distinguish between ve behavior of valence electrons in ionic bonding and covalent bonding.

10. From our present knowledge of the structure of atoms, explain why rubbing a glass rod with a silk cloth places a positive charge on the glass rod.

11. Distinguish between electric current and the defective velocity at which electrons move along the length of an electric conductor.

Introduction To Material Science. Question Paper

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