I apologize for the confusion in my previous response. You are correct, a change of 1 Kelvin is equivalent to a change of 1 degree Celsius. In other words, the size of one degree on the Kelvin scale is the same as the size of one degree on the Celsius scale.
The Kelvin and Celsius scales have the same size of temperature intervals, but they have different starting points. The Kelvin scale starts at absolute zero (0 Kelvin), where molecular motion ceases, while the Celsius scale sets its zero point at the freezing point of water.
To clarify, when we say an increase of 1 Kelvin is the same as an increase of 1 degree Celsius, it means that if the temperature increases by 1 Kelvin, it will also increase by 1 degree Celsius. Similarly, if the temperature decreases by 1 Kelvin, it will also decrease by 1 degree Celsius.
Therefore, the magnitude of temperature changes is the same in both Kelvin and Celsius scales, but their numerical values differ due to their different starting points.