Water Properties

Front

What is surface tension?

Back

Surface tension is the property of a liquid that allows it to resist an external force due to the cohesive nature of its molecules. It is caused by the attraction between molecules at the surface of the liquid.

Front

What causes a paperclip to float on water?

Back

A paperclip can float on water due to surface tension, which allows the water's surface to support the weight of the paperclip when it is gently placed on top.

Front

Which end of a water molecule has a slightly positive charge?

Back

The hydrogen end of a water molecule has a slightly positive charge due to the unequal sharing of electrons between the oxygen and hydrogen atoms.

Front

What is cohesion in the context of water?

Back

Cohesion is the attraction between water molecules, which allows them to stick together. This property is responsible for phenomena like water droplets forming.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between water molecules and other substances, which allows water to spread on surfaces or climb up thin tubes.

Front

What role do hydrogen bonds play in water's properties?

Back

Hydrogen bonds are responsible for water's unique properties, including cohesion, adhesion, high specific heat, and surface tension.

Front

What is the difference between cohesion and adhesion?

Back

Cohesion refers to the attraction between like molecules (e.g., water to water), while adhesion refers to the attraction between unlike molecules (e.g., water to glass).

Front

What is capillary action?

Back

Capillary action is the ability of water to flow in narrow spaces against gravity, due to the combined effects of cohesion and adhesion.

Front

How does temperature affect water's density?

Back

Water is most dense at 4°C. As it cools below this temperature or warms above it, its density decreases, which is why ice floats on water.

Front

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

Back

Water's high specific heat means it can absorb a lot of heat without a significant change in temperature, helping to regulate climate and maintain stable environments.