Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 9, Problem 20RQ
Is energy added, or is it released, when boiling water is changed to steam?
Expert Solution & Answer
To determine
Whether the energy is added or released, when boiling water is changed to steam.
Answer to Problem 20RQ
The energy is added when the boiling water is changed to steam.
Explanation of Solution
A transfer of heat energy occurs when the phase of the object or substance changes. This is because energy is needed to split the bonds of the phase so that it gets converted into another phase. For example, energy is added to solids in order to change it into the liquid phase.
On the other hand, energy is taken away when phase change is in the opposite direction. The temperature of the substance does not change during the phase change process. In case of phase change from boiling water to steam, a certain amount of heat energy is added to the boiling water so that bonds between the molecules break and the boiling water gets converted into steam.
Conclusion:
Therefore, the energy is added when the boiling water is changed to steam.
Chapter 9 Solutions
Conceptual Physical Science Explorations
Ch. 9 - Why does a penny become warmer when struck by a...Ch. 9 - What are the temperatures for freezing water on...Ch. 9 - What is meant by the statement a thermometer...Ch. 9 - Prob. 4RQCh. 9 - Prob. 5RQCh. 9 - Distinguish between temperature and heat.Ch. 9 - Is cold the opposite of thermal energy or the lack...Ch. 9 - Distinguish between a joule and acalorie.Ch. 9 - Does a substance that heats up quickly have a high...Ch. 9 - Prob. 10RQ
Ch. 9 - Why does a bimetallic strip bend with changes in...Ch. 9 - When the temperature of ice-cold water is...Ch. 9 - At what temperature do the combined effects of...Ch. 9 - What is the explanation for a barefoot firewalker...Ch. 9 - Does a good insular prevent heat from getting...Ch. 9 - What happens to the temperature of air when it...Ch. 9 - Why does the direction of coastal winds changes...Ch. 9 - How does the frequency of radiant energy relate to...Ch. 9 - What is terrestrial radiation? How does it differ...Ch. 9 - Is energy added, or is it released, when boiling...Ch. 9 - Which is greater, an increase in temperature of 1...Ch. 9 - Prob. 3TECh. 9 - Prob. 4TECh. 9 - Why will a watermelon stay cool for a longer time...Ch. 9 - Iceland, so named to discourage conquest by...Ch. 9 - If the winds at the latitude of San Francisco and...Ch. 9 - An old remedy for a pair of nested drinking...Ch. 9 - A metal ball is just able to pass through a metal...Ch. 9 - Prob. 10TECh. 9 - State whether water at the following temperatures...Ch. 9 - Why is it important to protect water pipes so they...Ch. 9 - If you hold one end of a metal nail against a...Ch. 9 - Many tongues have been injured by licking a piece...Ch. 9 - Prob. 15TECh. 9 - Prob. 16TECh. 9 - What determines whether an object is a net emitter...Ch. 9 - You can comfortably hold your fingers close beside...Ch. 9 - In a mixture of hydrogen and oxygen gases at the...Ch. 9 - Water vapor changes phase when it changes into...Ch. 9 - What would be the final temperature of a mixture...Ch. 9 - (Challenge!) Consider a 40,000km steel pipe that...Ch. 9 - Temperature is generally proportional to a...Ch. 9 - Prob. 2RATCh. 9 - Water freezes at a temperature of (a) 0C (b) 273K....Ch. 9 - Heat is simply another word for (a) temperature....Ch. 9 - To say that water has a high specific heat...Ch. 9 - A bimetallic strip used in thermostats relies on...Ch. 9 - The density of water at 4C will slightly increase...Ch. 9 - A firewalker walking barefoot across hot wooden...Ch. 9 - Thermal convection is linked mostly to (a) radiant...Ch. 9 - A high-temperature source radiates relatively (a)...
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