4.6.3. Surface Tension and Temperature

Try these first

1. 1.

   Define viscosity.

   Hint

   Think about how some liquids flow more easily than others.

2. 2.

   What happens to surface tension as temperature increases?

   Hint

   Consider the effects of heat on molecular attraction.

3. 3.

   How does increasing temperature affect the viscosity of liquids?

   • Increases viscosity
   • Decreases viscosity
   • No effect on viscosity

   Hint

   Remember how different liquids behave when heated.

4. 4.

   True or False: Surface tension increases with temperature.

   • True
   • False

   Hint

   Think about how heat affects the forces between molecules.

5. 5.

   Calculate the change in viscosity of water as its temperature rises from 20°C to 100°C using known values for these temperatures.

   Hint

   Look up viscosity tables for accurate coefficients.

6. 6.

   Discuss how understanding surface tension affects fluid design in products like detergents or emulsifiers.

   Hint

   Consider how product effectiveness is built on surface interactions.