Answer:
True
Explanation:
Here is an example: chemical properties include flammability, toxicity, acidity, reactivity. we observe the changes of these properties. Therefore, It's true.
Find the average of these 2 temperatures, since they have the same volume.
(80 + 10) ÷ 2 = 90 ÷ 2 = 45°C
You can only use this method of averaging them out because they have the same volumes :)
