Properties of Liquids

Which of the following is NOT a property of a liquid

• surface tension

• viscosity

• capillary action

• polar

What is viscosity?

• The weight of a fluid

• The smell of a fluid

• The color of a fluid

• The measure of a fluid's resistance to flow

Give an example of a liquid with high viscosity and a liquid with low viscosity.

• High viscosity: Honey, Low viscosity: Water

• High viscosity: Maple syrup, Low viscosity: Olive oil

• High viscosity: Molasses, Low viscosity: Milk

• High viscosity: Peanut butter, Low viscosity: Vinegar

As the temperature of a liquid increases, the viscosity

• Increases

• Doesn't change

• Decreases

• Not enough information

Explain surface tension of liquids.

• Surface tension is the result of cohesive forces between the molecules at the surface of a liquid.

• Surface tension is caused by the gravitational pull on the liquid

• Surface tension is the result of repulsive forces between the molecules at the surface of a liquid

• Surface tension is only present in gases, not in liquids

Define boiling point of a liquid.

• The temperature at which the liquid turns into a solid

• The temperature at which the liquid starts to evaporate

• The temperature at which the liquid freezes

• The temperature at which the vapor pressure of the liquid equals the external pressure surrounding the liquid.

Capillary action is

• Caused by cohesive and adhesive forces

• Allows some liquids to 'flow' vertically up a thin tube

• Not observed in liquid mercury

• All of the above

Cohesive forces

• Are the attraction of molecules within a liquid

• Are the attraction of molecules to the container walls

• Are only present when the liquid is exposed to glue

• Are important for upward movement in capillary action

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle