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
Question
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
Solution
The chemist has nickel. This is because, according to the table, nickel has the highest melting point (1455°C), which is above the maximum temperature of the chemist's heater (1000°C). This means it wouldn't melt. Also, while nickel is not the best conductor, the question only specifies that the metal is "one of the best" conductors, not necessarily the best. Therefore, the answer is E. nickel.
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