Chemistry Regents Practice Test

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Prepare for the Chemistry Regents Exam with essential questions and detailed explanations. Study via flashcards and multiple-choice questions to ensure exam readiness!

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Which element is known to have the highest melting point?

Iron
Tungsten
Carbon
Rhenium

The correct answer is: Rhenium

The element known to have the highest melting point is tungsten. Tungsten has a melting point of about 3422 degrees Celsius, which is significantly higher than that of the other elements listed. This remarkable property of tungsten makes it an essential material in various high-temperature applications, such as in light bulb filaments and aerospace components. In contrast, while iron, carbon, and rhenium also have relatively high melting points, they do not surpass that of tungsten. Iron has a melting point around 1538 degrees Celsius, carbon, in its diamond form, has a melting point of around 3550 degrees Celsius, but it can also sublime rather than melt at atmospheric pressure. Rhenium melts at about 3186 degrees Celsius, making it notable but still lower than tungsten. Thus, tungsten is recognized for its exceptional resistance to heat and is widely used in environments where durability and high melting points are essential.