Water Properties

What is the importance of water's crystalline structure when frozen?

• It allows ice to float on water due to its lower density.

• It makes ice more conductive than liquid water.

• It increases the temperature at which water freezes.

• It allows ice to dissolve in water more easily.

What is the effect of temperature on water's density?

• As temperature increases, the density of water decreases until it reaches 4°C.

• As temperature increases, the density of water increases.

• Water's density remains constant regardless of temperature changes.

• As temperature decreases, the density of water decreases.

Why does ice float?

• Because ice is heavier than water.

• As water freezes, it expands and its density decreases.

• Ice is made of a different substance than water.

• Ice has a higher temperature than liquid water.

What is the role of hydrogen bonds in water's properties?

• They contribute to water's low boiling point and high density.

• They contribute to water's high specific heat, cohesion, adhesion, and surface tension.

• They have no significant effect on water's properties.

• They make water a poor solvent for ionic compounds.

What is cohesion in terms of water properties?

• Cohesion is the attraction between water molecules due to hydrogen bonding.

• Cohesion is the ability of water to resist temperature changes.

• Cohesion is the process of water evaporating from a surface.

• Cohesion is the force that causes water to flow downhill.

What is the significance of water's high specific heat?

• It allows water to absorb and release large amounts of heat without significant temperature changes.

• It makes water a poor solvent for ionic compounds.

• It causes water to freeze at a higher temperature than other liquids.

• It enables water to evaporate quickly at room temperature.

What is adhesion in terms of water properties?

• The attraction between water molecules and other substances.

• The ability of water to resist external forces.

• The process of water evaporating into the atmosphere.

• The tendency of water to form droplets on a surface.

What is surface tension in water?

• A cohesive force at the surface of water that makes it behave like a stretched elastic membrane.

• The ability of water to dissolve substances easily.

• The temperature at which water boils.

• The pressure exerted by water vapor in the air.

Which is NOT a unique property of water?

• Water expands when it freezes.

• Water has a high specific heat capacity.

• Water cools very rapidly.

• Water is a universal solvent.

What is the role of water as a solvent?

• Water is known as the 'universal solvent' because it can dissolve many substances.

• Water is primarily used for drinking and hydration.

• Water has no significant role in dissolving substances.

• Water is only a solvent for salts and minerals.