It is said that mercury is used in defining the temperature scale because it expands uniformly with temperature. if the temperature scale is not yet defined, is it logical to say that a substance expands uniformly with temperature?
Answers
Well temperature is a relative term to show the sensible energy or molecular vibrational energy of a substance, so when we say, a substance expand with temperature we mean that with the increase of sensible energy the substance expands. Scales are just to show a relative level of magnitude of sensible energy of a substance with some known systems like ice point etc .
Also it is not must that all substance expand uniformly with temperature. Due to which two thermometer scales with different fluids, even if calibrated at ice point and boiling point will give different temperature reading for a same substance.
Mercury has a uniform expansion rate.
It's not illogical to assume that mercury spreads uniformly before determining a temperature scale.
Explanation:
- It's not illogical to assume that mercury spreads uniformly before determining a temperature scale.
- It is uniform distribution can be analyzed by comparing mercury expansion with expansion of certain substances (like water from alcohol etc.)
Substance:- A substance is really a pure or natural form of matter. Substance is matter containing only molecule or one atom. In the meantime, a mixture comprises a mixture of various molecule or atom and is thus assumed to be impure.
To know more about temperature scale, visit:
What is meant by temperature scale? Describe Celsius scale.
https://brainly.in/question/2895642
Explain how you will calibrate a Celsius temperature scale locally
https://brainly.in/question/2807225