SOLUTION: Unit 2 2 properties of water worksheet ib biology ... - Free Printable

Looking at the worksheet, I need to fill in the table with information about properties of water. The first row is already partially filled as an example.

Let me work through each property systematically:

1. Adhesive - Already started in the example
2. Cohesive - Need to complete this row
3. High specific heat capacity - Need to complete this row
4. High latent heat of vaporization - Need to complete this row
5. High boiling point - Need to complete this row
6. Water is a good solvent - Need to complete this row

For each property, I need to provide:
- Definition in my own words
- Example of how living organisms use it
- Molecular explanation of why water has this property

Let me think through each one carefully:

Adhesive: Water sticks to other surfaces. Example: Water moves up plant stems through capillary action. Molecular reason: Water molecules are polar and attracted to other polar surfaces.

Cohesive: Water molecules stick to each other. Example: Water droplets form on leaves. Molecular reason: Hydrogen bonds between water molecules create surface tension.

High specific heat capacity: Water can absorb lots of heat before getting hot. Example: Oceans help regulate Earth's temperature. Molecular reason: Energy is needed to break hydrogen bonds before water molecules can move faster.

High latent heat of vaporization: Water needs lots of energy to turn from liquid to gas. Example: Sweating cools our bodies. Molecular reason: Breaking hydrogen bonds requires significant energy.

High boiling point: Water stays liquid at higher temperatures than expected. Example: Aquatic life survives in warm water. Molecular reason: Strong hydrogen bonds hold molecules together tightly.

Good solvent: Water dissolves many substances. Example: Blood carries nutrients throughout the body. Molecular reason: Water's polarity allows it to surround and separate charged particles.

Now let me write these in simple, clear language for the worksheet.

Final Answer:
adhesive- Definition: Water sticks to other surfaces. Example: Water moves up plant stems through capillary action. Molecular explanation: Water molecules are polar and attracted to other polar surfaces like cell walls.

cohesive- Definition: Water molecules stick to each other. Example: Water droplets form on leaves and insects can walk on water. Molecular explanation: Hydrogen bonds between water molecules create surface tension that holds them together.

high specific heat capacity- Definition: Water can absorb lots of heat before its temperature rises. Example: Oceans help regulate Earth's temperature and keep climates stable. Molecular explanation: Energy is needed to break hydrogen bonds between water molecules before they can move faster and get hotter.

high latent heat of vaporization- Definition: Water needs lots of energy to change from liquid to gas. Example: Sweating cools our bodies because evaporation removes heat. Molecular explanation: Breaking hydrogen bonds requires significant energy, so much heat is absorbed when water evaporates.

high boiling point- Definition: Water stays liquid at higher temperatures than similar molecules. Example: Aquatic life survives in warm water without it turning to steam. Molecular explanation: Strong hydrogen bonds hold water molecules together tightly, requiring high temperatures to break them apart.

water is a good solvent- Definition: Water can dissolve many different substances. Example: Blood carries dissolved nutrients and oxygen throughout the body. Molecular explanation: Water's polarity allows it to surround and separate charged particles, making them dissolve easily.