A lustrous material does not conduct electricity in both the solid and molten state.It has a very high melting point. What would be the classification of this substance?

Which of the following types of crystalline solids is a hard substance, has a high melting point,and is generally a nonconductor of electricity even in melted form?A) ionic solidB) covalent-network solidC) molecular solidD) metallic solidE) all of the above

A chemist is trying to identify a sample of metal that is listed in this table. She passes an electrical current through the sample and finds that, of the metals listed in the table, it’s one of the best conductors. Then she heats the metal to 1000°C, which is the highest temperature her heater allows. The metal doesn’t melt. Which type of metal does the chemist have?Material Melting Point (°C) Electrical Conductivity Rankingaluminum 660 3copper 1085 2zinc 420 4silver 962 1nickel 1455 5 A. aluminum B. copper C. zinc D. silver E. nickel

What name is given to a material that does NOT conduct thermal energy well?

The electrical conductivity and melting point of an alloy is ______________ than that of pure metals

Which one of the following is NOT a property of pure metals?High melting pointPoor electrical conductorSolid at room temperatureGood thermal conductor