1. Water

2. Properties Density = 1 g/mL Cohesion/Adhesion Universal Solvent
Moderating Temperature
Expansion upon Freezing

3. Density How compact the particles are in a substance
Cold water is more dense then warm water
Salt water is more dense then fresh water

4. Polarity Oxygen is much more electronegative then Hydrogen
The electrons stay toward the oxygen more then they stay toward the hydrogen atoms
Oxygen is partially negative
Hydrogen is partially positive
Makes water a polar molecule

6. Cohesion
Cohesion
Water molecules get pulled towards each other because of their polarity
This creates a surface tension
Allows bugs to run across water without sinking in
The paperclip floating in the water

8. Adhesion
Adhesion
Water molecules get pulled toward molecules of objects
The water moving up the sides of the straw

9. Capillary Action
Cohesion and Adhesion work together to move upwards against gravity
How water moves up the roots of plants into the leaves

11. Universal Solvent
Many substances can dissolve very easily in water because of adhesion
Solute
Substance being dissolved
Solvent
Substance the solute is dissolved in
Forms a solution

12. Importance This is very important to humans Play a role in digestion
Transports materials throughout the body
Aids in chemical reactions
Many medicines come in the form of a solution

14. Moderating Temperature
Water can absorb large amounts of heat without changing its temperature
High Specific Heat Capacity
Prevents our bodies from fluctuating in temperature too much
Negative Feedback
When you get too hot, you sweat
The water removes some of the heat from your body

15. Expansion Upon Freezing
Water becomes less dense as it freezes, allowing aquatic life to continue

16. Water Lab Websites Temperature and Density
Salinity and Density