Have an example for you.
If it is 0 degrees and it gets twice as cold, how cold is it?
Celsius or Farenheit?
Can’t happen. Atomic motion would cease. Mathematically it can be done however: Subtract the difference in temperature between the Planck temperature from the (arbitrary)zero on your scale, multiply by two and move the result to the other side of your number line, and voila! It only fails because the difference would go beyond reducing matter to zero ground state temperatures, also known as absolute zero.
“If it is 0 degrees”
What scale?