The entropy of a perfect crystalline substance at absolute zero is:
Practice Questions
Q1
The entropy of a perfect crystalline substance at absolute zero is:
Zero
Maximum
Undefined
Infinite
Questions & Step-by-Step Solutions
The entropy of a perfect crystalline substance at absolute zero is:
Correct Answer: Zero
Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Learn about absolute zero. Absolute zero is the lowest possible temperature, 0 Kelvin, where all molecular motion stops.
Step 3: Know what a perfect crystalline substance is. A perfect crystalline substance has a highly ordered structure with no defects.
Step 4: Familiarize yourself with the third law of thermodynamics. This law states that as the temperature of a perfect crystal approaches absolute zero, its entropy approaches zero.
Step 5: Conclude that at absolute zero, a perfect crystalline substance has no disorder, which means its entropy is zero.
