ViscosityCohesionAdhesion

What factors determine the viscosity of fluids?

• Pressure, volume, and surface area

• Adhesive forces, capillary action, and gravity

• Color, density, and pH level

• Intermolecular forces, molecule size and shape, and temperature

Why does water have high surface tension?

• Due to its high density and low viscosity

• Because it is a solid at room temperature

• Because of its small molecule size and strong hydrogen bonds

• Due to its large molecule size and weak hydrogen bonds

What enables capillary action in narrow spaces?

• Adhesive forces between liquid molecules and a material's surface, combined with cohesive forces

• The weight of the liquid and the width of the container

• The temperature and pressure of the environment

• The color and density of the liquid

How do surface molecules in liquids behave compared to those in the bulk?

• They interact with twice the number of molecules

• They interact with half the number of molecules

• They do not interact with any molecules

• They interact with the same number of molecules

Why do water droplets form spherical shapes?

• To increase surface area and reduce hydrogen bonding

• To maximize surface area and minimize hydrogen bonding

• To minimize surface area and maximize hydrogen bonding

• To decrease surface area and increase temperature

What is the primary reason for the meniscus formation in a liquid column?

• The density of the liquid

• The temperature of the liquid

• The adhesive forces between the liquid and the container walls

• The gravitational pull on the liquid

How does temperature affect the viscosity of a liquid?

• Viscosity increases with temperature

• Viscosity decreases with temperature

• Viscosity remains constant with temperature

• Viscosity fluctuates randomly with temperature

What causes the phenomenon of surface tension in liquids?

• The temperature and pressure of the environment

• The adhesive forces between the liquid and the container

• The cohesive forces between molecules at the surface

• The gravitational force acting on the liquid

Viscosity is

• the resistance to flow

• the resistance to spread out

• the ability to make sheets of metal

• the ability to make wire

If a substance has a strong/high VISCOSITY it will...

• Flow quickly

• Flow Slowly