*Flashcard Review: Structure and Properties of Water*

Front

What happens when table salt (NaCl) is added to water?

Back

The negatively charged chloride ions (Cl-) will be attracted to the positively charged hydrogen pole of water molecules.

Front

Why does sand cool down faster than ocean water after sunset?

Back

The sand has a lower heat capacity than the ocean water.

Front

What causes sea breezes to occur during the day?

Back

Sea breezes occur during the day because land heats up more quickly than water.

Front

What does a pH of 5.8 indicate about river water?

Back

The river water is more acidic than neutral water.

Front

Why is water considered a polar molecule?

Back

Water is called a polar molecule due to the unequal sharing of electrons between its oxygen and hydrogen atoms.

Front

What is the definition of heat capacity?

Back

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

Front

How does water's high heat capacity affect climate?

Back

Water's high heat capacity helps moderate climate by absorbing and releasing heat slowly.

Front

What is the significance of water being a solvent?

Back

Water's ability to dissolve many substances makes it essential for biological processes.

Front

What is the role of hydrogen bonds in water?

Back

Hydrogen bonds give water its unique properties, such as high surface tension and cohesion.

Front

How does the density of water change with temperature?

Back

Water is most dense at 4°C; it becomes less dense as it freezes, allowing ice to float.