Aquatic Science Semester 1 Exam Review

Front

What property of water allows insects to walk on water?

Back

Surface Tension: This is the cohesive force between water molecules at the surface, allowing them to resist external force.

Front

What is the pH range of ocean water?

Back

7.8-8.3: This range indicates that ocean water is slightly alkaline.

Front

Which state of water is most dense?

Back

Liquid Water: Unlike most substances, water is most dense in its liquid form, which is why ice floats.

Front

What property of water is demonstrated when water molecules stick together?

Back

Cohesion: This is the attraction between molecules of the same substance, which in water is due to hydrogen bonding.

Front

Do water molecules have a positive and negative end?

Back

True: Water is a polar molecule, meaning it has a partial positive charge on one end and a partial negative charge on the other.

Front

What is adhesion in the context of water?

Back

Adhesion: This is the attraction between water molecules and different substances, allowing water to climb up plant roots.

Front

What is the universal solvent?

Back

Water: It is called the universal solvent because it can dissolve more substances than any other liquid.

Front

What is the significance of hydrogen bonding in water?

Back

Hydrogen Bonding: This weak bond between water molecules is responsible for many of water's unique properties, including high specific heat.

Front

What is the specific heat of water?

Back

4.18 J/g°C: This high specific heat allows water to regulate temperature in environments.

Front

What is the role of water in aquatic ecosystems?

Back

Water provides habitat, regulates temperature, and is essential for biochemical processes.