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Author Question: The temperature at which a liquid freezes is A) affected by foreign ions. B) the same ... (Read 46 times)

Zoey63294

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on: Jul 29, 2018
The temperature at which a liquid freezes is
 
  A) affected by foreign ions.
  B) the same temperature at which its solid form melts.
  C) both of these
  D) neither of these

Question 2

When salt is introduced to ice, the temperature at which melting occurs is
 
  A) quite unaffected.
  B) lowered.
  C) increased.
  D) dependent on the shape of salt and ice crystals


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Perkypinki

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: B


Zoey63294

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Reply #2 on: Jul 29, 2018
Thank you!


Perkypinki

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Reply #3 on: Jul 29, 2018
Always glad to help...


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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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