Multiple choice

As the temperature of the water rises gradually its surface tension ______ gradually?

  1. decreases

  2. increases

  3. remains constant

  4. increase only when the heat is too high

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Surface tension of water decreases as temperature increases because the kinetic energy of the molecules increases, weakening the cohesive forces.

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