Biology: Properties of Water

Front

What are the unique properties of water?

Back

1. Frozen water floats on liquid water. 2. Water covers most of the Earth’s surface and retains a large amount of heat. 3. Water molecules stick to each other through hydrogen bonds. 4. Water is a universal solvent.

Front

How many hydrogen atoms are in a water molecule?

Back

2

Front

What property of water allows it to rise in a narrow tube?

Back

Capillary action.

Front

What two elements make up water?

Back

Hydrogen and oxygen.

Front

Why is water considered a universal solvent?

Back

Because it dissolves most substances.

Front

What is surface tension in water?

Back

The cohesive force between water molecules at the surface, allowing it to resist external force.

Front

What happens to water when it freezes?

Back

It expands and becomes less dense, allowing ice to float.

Front

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

Back

It helps regulate temperature in the environment and organisms.

Front

What is the role of hydrogen bonds in water?

Back

They create cohesion and adhesion, affecting water's properties.

Front

How does water's polarity affect its interactions with other molecules?

Back

It allows water to form hydrogen bonds with other polar molecules.