Water Properties Flashcard

Front

What is the product of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in any aqueous solution at 25°C?

Back

Front

Back

The solution is a base.

Front

How does sweating cool the body at a molecular level?

Back

Sweat absorbs heat from the body and evaporates, taking the heat away.

Front

What do we call solutions that contain weak acids and bases that minimize changes in pH?

Back

These solutions are called buffers.

Front

Why do large bodies of water not quickly fluctuate in temperature?

Back

Water has a high heat capacity.

Front

Define pH.

Back

pH is a measure of the hydrogen ion concentration in a solution.

Front

What is the significance of a buffer solution?

Back

Buffer solutions resist changes in pH when small amounts of acid or base are added.

Front

Explain the concept of heat capacity.

Back

Heat capacity is the amount of heat required to change the temperature of a substance by one degree Celsius.

Front

What is the role of hydrogen ions in determining acidity?

Back

The concentration of hydrogen ions (H⁺) determines the acidity of a solution; more H⁺ means more acidic.

Front

What happens to the temperature of water when it absorbs heat?

Back

The temperature of water increases, but due to its high heat capacity, the increase is gradual.