3rd: BR- Properties of Water

Give an example of cohesion in everyday life.

• Water beads up on a waxed car surface.

• Oil mixes easily with water.

• Sugar dissolves in hot coffee.

• Salt crystals form in dry air.

What is adhesion in relation to water?

• Adhesion is the property of water that allows it to be attracted to other substances, causing water to 'stick' to surfaces.

• Adhesion is the ability of water to evaporate quickly when heated.

• Adhesion refers to the process of water molecules breaking apart in a chemical reaction.

• Adhesion is the tendency of water to form bubbles on a surface.

Give an example of adhesion in everyday life.

• Water sticks to a glass surface

• Oil floats on water

• Sugar dissolves in coffee

• Salt forms crystals in water

Why do water droplets form a 'tear drop' shape?

• Due to the pull of gravity and the cohesive forces between water molecules.

• Because of the surface tension of the water only.

• Due to the temperature of the water being too high.

• Because of the shape of the container holding the water.

How does water's unique structure contribute to its properties?

• Water's unique structure allows for strong hydrogen bonding, leading to high cohesion and adhesion.

• Water's structure is entirely non-polar, which makes it a poor solvent.

• Water's structure has no impact on its properties, as they are solely determined by temperature.

• Water's unique structure results in low surface tension and poor solvent capabilities.

What is the difference between adhesion and cohesion?

• Adhesion is the attraction between water and other substances, while cohesion is the attraction between water molecules themselves.

• Adhesion is the attraction between water molecules, while cohesion is the attraction between water and other substances.

• Adhesion refers to the ability of water to evaporate, while cohesion refers to the ability of water to freeze.

• Adhesion is the process of water moving through soil, while cohesion is the process of water being absorbed by plants.

How does temperature affect the properties of water?

• As temperature increases, water molecules move faster, reducing cohesion and surface tension.

• Higher temperatures increase water's density and viscosity.

• Temperature has no effect on the properties of water.

• Lower temperatures cause water to evaporate more quickly.

What is cohesion in relation to water?

• Cohesion is the property of water that allows water molecules to be attracted to each other, resulting in surface tension.

• Cohesion is the ability of water to dissolve other substances.

• Cohesion refers to the temperature at which water boils.

• Cohesion is the process by which water evaporates from a surface.

What role does surface tension play in nature?

• It allows small insects, like water striders, to walk on water without sinking.

• It helps in the formation of clouds in the atmosphere.

• It prevents fish from swimming too deep in the ocean.

• It allows plants to absorb water through their roots.

What is surface tension?

• A property of water that allows it to resist an external force due to the cohesive nature of its molecules.

• The ability of a liquid to flow easily.

• The measure of how much a liquid can be compressed.

• The temperature at which a liquid boils.