2.4. Miscellaneous Properties

Try these first

1. 1.

   What is surface tension?

   Hint

   Think about raindrops and their shape.

2. 2.

   Define vapor pressure.

   Hint

   Consider how liquids change to gases.

3. 3.

   What is the definition of surface tension?

   • The pressure within a liquid
   • The force that acts on a fluid surface
   • The viscosity of a fluid

   Hint

   Think about how raindrops form.

4. 4.

   True or False: Vapor pressure is only concerned with solid materials.

   • True
   • False

   Hint

   Remember the states of matter.

5. 5.

   Calculate the surface tension if 10 drops of water are found to weigh 2 grams. Discuss how this affects the small insect's ability to walk on water.

   Hint

   What forces act on the water's surface?

6. 6.

   Given a liquid with a vapor pressure of 20 mmHg at 25°C, if the atmospheric pressure is 760 mmHg, describe what will happen if this liquid is heated. Justify your answer.

   Hint

   What relationship do temperature and vapor pressure have?