Which value is listed as the absolute zero for the Celsius scale in the material?

Which value is listed as the absolute zero for the Celsius scale in the material?

• A. -273.15
• B. 273.15
• C. 0
• D. 373.15

Answer: (B)

Absolute zero is the lowest possible temperature, where molecular motion is minimized. In the Celsius scale, that limit is -273.15 degrees. The relation between Kelvin and Celsius is K = C + 273.15, so 0 K corresponds to -273.15°C. Therefore, the correct value for absolute zero on the Celsius scale is -273.15°C. The figure 273.15 is the Kelvin value that corresponds to 0°C, not the absolute zero in Celsius. The other numbers represent familiar temperatures (0°C is 273.15 K, 100°C is 373.15 K) but are not the absolute zero in Celsius.

Absolute zero is the lowest possible temperature, where molecular motion is minimized. In the Celsius scale, that limit is -273.15 degrees. The relation between Kelvin and Celsius is K = C + 273.15, so 0 K corresponds to -273.15°C. Therefore, the correct value for absolute zero on the Celsius scale is -273.15°C. The figure 273.15 is the Kelvin value that corresponds to 0°C, not the absolute zero in Celsius. The other numbers represent familiar temperatures (0°C is 273.15 K, 100°C is 373.15 K) but are not the absolute zero in Celsius.