Biology EOC Review: L.18.12 Properties of Water

Front

What is the structure of a water molecule?

Back

A water molecule consists of one negatively charged oxygen atom and two positively charged hydrogen atoms.

Front

What pH range indicates an acidic solution?

Back

Acidic solutions have a pH that is between 0 and 7.

Front

What property of water prevents it from mixing with oil?

Back

The special property of water that prevents it from mixing with oil is polarity.

Front

In a solution, what is the solvent?

Back

The solvent is the substance that dissolves the solute; in a saltwater solution, water is the solvent.

Front

What are the attractions between water molecules called?

Back

The attractions between water molecules are called hydrogen bonds.

Front

What is the definition of polarity in water?

Back

Polarity in water refers to the distribution of electrical charge, leading to a molecule with a slight positive charge on one end and a slight negative charge on the other.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution.

Front

What is a hydrogen bond?

Back

A hydrogen bond is a weak attraction between a hydrogen atom in one molecule and an electronegative atom in another molecule.

Front

How does water's density change when it freezes?

Back

Water expands and becomes less dense when it freezes, which is why ice floats on water.

Front

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

Back

Water's high specific heat allows it to absorb and release large amounts of heat without significant temperature changes, helping to regulate climate.