Question

What is the change in
temperature when water goes
from 65.0 °C to 25.0 °C?
AT = [?] °C

Answer 1

Answer:

$\Delta T=-40 \ \textdegree C$

Explanation:

The change in temperature is given as the initial temperature minus the final temperature.

$\Delta T=T_f-T_0$

Given:

$T_0=65.0 \ \textdegree C\\T_f=25.0 \ \textdegree C$

Find:

$\Delta T= \ ?? \ \textdegree C$

$\hrulefill$

Calculation:

$\Delta T=25.0 \ \textdegree C-65.0 \ \textdegree C\\\\\therefore \boxed{\Delta T=-40 \ \textdegree C}$

Thus, the change in temperature is found. Typically, depending on the calculation, we take the magnitude version of the change in temp (ignore the negative in front).