HOMEWORK #1: Properties of Water

Front

What is an acid?

Back

An acid is a substance with a pH less than 7.

Front

What is capillary action?

Back

Capillary action is the ability of water to move through narrow spaces, such as in plants, due to the attraction between water molecules and the surrounding materials.

Front

What property of water helps to moderate Earth's temperature?

Back

Specific heat capacity is the property of water that allows it to absorb and release heat without a significant change in temperature.

Front

Why does ice float on water?

Back

Ice floats on water because the hydrogen bonds of water expand during the freezing process, creating more volume and decreasing the density of the ice.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between water molecules and other substances.

Front

What is cohesion in the context of water?

Back

Cohesion is the attraction between water molecules to each other.

Front

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

Back

Water's high specific heat capacity allows it to stabilize temperatures in environments, making it essential for life.

Front

What is surface tension?

Back

Surface tension is the cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.

Front

What is latent heat of vaporization?

Back

Latent heat of vaporization is the amount of energy required to convert water from liquid to gas without changing its temperature.

Front

How does water's density change when it freezes?

Back

Water's density decreases when it freezes, which is why ice floats on liquid water.