Resistance to change in temperature?

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Discussion Overview

The discussion centers around the concept of whether a larger volume of hot water exhibits more resistance to changes in temperature compared to a smaller volume. Participants explore the idea of thermal inertia in liquids and seek clarification on relevant equations and definitions related to heat capacity.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions if a larger amount of hot water has more resistance to temperature change than a smaller amount, suggesting a potential "inertia" in liquids regarding temperature retention.
  • Another participant refers to the definitions of "heat capacity" and "specific heat capacity" as relevant concepts to consider in this context.
  • A third participant explains that all substances have a specific heat capacity, which indicates their ability to store heat, and mentions that water has a higher specific heat capacity than air, implying that larger quantities of water can store more heat.
  • The relationship between the total heat stored and the quantity of the substance is highlighted, noting that the heat stored is proportional to the mass of the substance.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the concepts of heat capacity and thermal inertia, but there is no explicit consensus on the original question about resistance to temperature change.

Contextual Notes

Some assumptions about the definitions of heat capacity and specific heat capacity may not be fully articulated, and the discussion does not resolve the mathematical relationships involved.

Who May Find This Useful

This discussion may be of interest to those exploring concepts in thermodynamics, specifically related to heat capacity and temperature change in liquids.

davetheant
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I was wondering, after looking at a pot of hot water today, whether a large amount of hot water has more resistance to change in temperature than a small pot of water. I thought maybe liquids had a sort of inertia when it comes to temperature; maybe a larger amount could stay hot for longer than a smaller amount. Is this true? And if so, is there an equation that someone could give me? Thanks.
 
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davetheant said:
I was wondering, after looking at a pot of hot water today, whether a large amount of hot water has more resistance to change in temperature than a small pot of water. I thought maybe liquids had a sort of inertia when it comes to temperature; maybe a larger amount could stay hot for longer than a smaller amount. Is this true? And if so, is there an equation that someone could give me? Thanks.

Look at the definitions (in words) of "heat capacity" and "specific heat capacity".

Zz.
 
All substances have a "specific heat capacity", which is a measure of the material's capacity to store heat. This is sometimes described as "thermal mass", a useful but not entirely accurate analogy. For example, water has a higher specific heat capacity than air.

http://en.wikipedia.org/wiki/Specific_heat_capacity

The total heat stored in an object is proportional to the quantity of it; so the amount of heat stored in 1kg of water is half that of 2kg of water.
 
thanks a lot guys
 

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