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Author Question: Which of the following are true about boiling? 1. Boiling a liquid requires more energy than does ... (Read 123 times)

james

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on: Jul 16, 2018
Which of the following are true about boiling? 1. Boiling a liquid requires more energy than does evaporating it. 2. A liquid's boiling point varies with the atmospheric pressure. 3. The greater the ambient pressure, the lower is the boiling point.
 
  a. 2 and 3 only
  b. 1 and 3 only
  c. 1 and 2 only
  d. 1, 2, and 3

Question 2

What is the change in state of a substance from liquid to gaseous form occurring below its boiling point?
 
  a. Evaporation
  b. Sublimation
  c. Boiling
  d. Vaporization


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Edwyer

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Because the weight of the atmosphere retards the escape of vapor molecules, the greater the am-bient pressure, the greater is the boiling point.

Answer to Question 2

ANS: A
A liquid can also change into a gas at temperatures lower than its boiling point through a process called evaporation.


james

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Reply 2 on: Jul 16, 2018
Wow, this really help

atrochim

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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