SolidsCovalent-Network Solids36Choose the best answerWhich of the following is a covalent-network crystal?ASiBNaFCAlDAr Like 0 Discuss 0Share
SolidsMetallic Solids37Choose the best answerWhich type of crystal generally conducts both heat and electricity effectively?AIonicBCovalentCMetallicDMolecular Like 0 Discuss 0Share
SolidsProperties of Ionic Solids38Choose the best answerWhich statement is incorrect for ionic crystals?AThey generally have high melting pointsBThey behave as electrolytes when molten or dissolvedCThey can show isomorphismDTheir ionic bonding is directional Like 0 Discuss 0Share
SolidsProperties of Metallic Solids39Choose the best answerA characteristic property of many metallic crystals is that they are:ABrittle and non-conductingBDuctile and good conductorsCAlways soft and insulatingDComposed of neutral molecules Like 0 Discuss 0Share
SolidsMelting and Intermolecular Forces40Choose the best answerDuring melting of a solid, which change does NOT occur?ADisorder increasesBIntermolecular attractions are weakenedCAverage kinetic energy decreasesDAverage separation between particles increases Like 0 Discuss 0Share