# Celsius to Kelvin [closed]

A temperature conversion question asks the following: "The temperature of a sample of a substance changes from 10°C to 20°C. How many Kelvin degrees does the temperature change?"

The correct answer is 10 K, but my question is, why wouldn't you just convert the difference (10°C) to 283 K?

## closed as off-topic by Zhe, Mithoron, A.K., Jon Custer, TyberiusNov 6 '18 at 20:48

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• Let's put it this way. The temperature of a substance was 10°C; how many K was that? Then it changed to 20°C; how many K is that? Now what is the difference? – Ivan Neretin Nov 5 '18 at 22:10
• Degrees K are the same size/value as degrees C. The question is asking about the change not the absolute value. – Waylander Nov 5 '18 at 22:26

The point is, we are measuring $$\textbf{change}$$ in temperature. Not the temperature itself.