SC.912.L.18.12 - Properties of water

Front

What is the molecular structure of water?

Back

Water (H2O) consists of one oxygen atom covalently bonded to two hydrogen atoms, forming a bent shape.

Front

What is polarity in water molecules?

Back

Polarity refers to the distribution of electrical charge over the atoms in a molecule. In water, the oxygen atom is slightly negative, while the hydrogen atoms are slightly positive.

Front

What is cohesion in the context of water?

Back

Cohesion is the property of water that allows water molecules to stick to each other due to hydrogen bonding.

Front

What is adhesion in the context of water?

Back

Adhesion is the property of water that allows it to stick to other substances, such as the walls of plant xylem.

Front

What is capillary action?

Back

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

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas when heat is added.

Front

What is surface tension?

Back

Surface tension is the elastic tendency of water's surface, allowing it to resist external force due to cohesive forces between water molecules.

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 before its temperature changes, helping to regulate climate and maintain stable environments.

Front

What is density in relation to water?

Back

Density is the mass per unit volume of a substance. Water is most dense at 4°C, and ice is less dense than liquid water, allowing it to float.

Front

What is the role of water in photosynthesis?

Back

Water is a reactant in photosynthesis, providing electrons and protons needed for the conversion of carbon dioxide and sunlight into glucose and oxygen.