QUIZ1-2009key

QUIZ1-2009key - 2+ ion. a) [Ar] 3d 4 4s 2 b) [Ar] 3d 6 c)...

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PRINT NAME ________________________ INTRODUCTION TO MATERIAL SCIENCE MSE-150 QUIZ 1 I PLEDGE MY HONOR THAT I HAVE NEITHER GIVEN OR RECEIVED AID ON THIS EXAMINATION. I FURTHER PLEDGE THAT, IF I HAVE REASON TO SUSPECT THAT THE CODE HAS BEEN VIOLATED, I HAVE TAKEN OR WILL TAKE ACTION AS OUTLINED IN THE CODE. SIGNATURE _________________________ (1 point each) Label the following materials with the appropriate materials class, metals, polymers, or ceramics . (Write the letter M, P, or C next to the material) aluminum M wood P glass (SiO 2 ) C polyvinyl chloride (PVC) P steel M brick C A class of materials with high electrical conductivity. M A class of materials with the lowest density P A class of materials that exhibit brittle behavior. C A class of materials with the highest density. M (4 points) The electron configuration for iron (Fe) is [Ar] 3d 6 4s 2 . How many valence electrons does Fe have? a) 1 b) 2 c) 6 d) 8 Write the electron configuration for the Fe
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Unformatted text preview: 2+ ion. a) [Ar] 3d 4 4s 2 b) [Ar] 3d 6 c) [Ar] 3d 5 4s 1 d) [Ar] 3d 3 4s 2 (2 points) Sulfur (Z=16) is located in Row 3 and Column VI of the periodic table. Write the ground state electron configuration for the outer most shell of electrons for sulfur in the spdf notation. a) 3s 2 3p 6 b) 6s 2 6p 1 c) 3s 2 3p 1 d) 3s 2 3p 4 (2 points) Elements can be classified as metals or non-metals. For the following attributes or properties, circle all that apply to non-metals . 3 or less valence electrons forms anions high electornegativity 4 or more valence electrons forms cations low electornegativity (2 points) If the mass of a single atom of silver (Ag) is 1.79 x 10-22 g, calculate the atomic weight of silver in g/mole. Use the correct number of significant figures for the correct answer . Avogadros Number = 6.023 x 10 23 atoms/mole a) 107.8 g/mole b) 29.7 g/mole c) 10.8 g/mole d) 108 g/mole...
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