Water Practice- SL

Front

Why is sweat a good coolant for the body?

Back

Breaking H bonds between water molecules in sweat require energy from body heat.

Front

Why is the ocean considered a more likely location for the origin of life than a pond?

Back

Oceans provide a more stable and diverse environment.

Front

What causes plasmolysis in cells?

Back

Due to water leaving the cell in a hypertonic environment.

Front

Why does ice float on water?

Back

The hexagonal lattice structure of ice results in a lower density compared to liquid water.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells and may burst due to water intake.

Front

Define hypertonic solution.

Back

A solution with a higher concentration of solutes compared to another solution.

Front

Define hypotonic solution.

Back

A solution with a lower concentration of solutes compared to another solution.

Front

What is osmosis?

Back

The movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Explain the significance of hydrogen bonding in water.

Back

Hydrogen bonds give water its unique properties, such as high specific heat, cohesion, and adhesion.

Front

What is the role of water in biochemical reactions?

Back

Water acts as a solvent, reactant, and product in many biochemical reactions.