Unformatted text preview: c. thermal expansion coefficient ( a ) 2. Ceramic solids with ionic bonding exhibit brittle behavior because bonding is a. flexible b. directional c. with restricted neighborhood ( c ) 3. The depth of the atomic potential versus atomic distance at equilibrium separation between the ions gives a. cohesive energy b. repulsive energy c. attractive energy ( a) 4. The electrical conductivity of covalently bonded semiconductors with temperature a. increases b. decreases c. does not change ( a) 5. Low melting point of polymers arises from a. covalent bonding within the polymer molecule b. Van der Walls bonding between the polymer molecule c. covalent bonding between the polymer molecule ( b) Bonus 6. What changes do you like in the way the lectures and the course is offered...
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- Fall '08
- Atom, Chemical bond, Electrical conductivity, A. Covalent Bonding, C. Covalent Bonding