1. Water Properties State the properties of water Relate the properties of water to living organisms Describe how hydrogen bonds form between water molecules Explain how substances can be hydrophobic or hydrophilic Explain how water can be used as a coolant Compare thermal properties of water and methane Describe how substances are transported in blood

2. Water Properties State the properties of water Relate the properties of water to living organisms Describe how hydrogen bonds form between water molecules Explain how substances can be hydrophobic or hydrophilic Explain how water can be used as a coolant Compare thermal properties of water and methane Describe how substances are transported in blood

3. Water properties Below are the properties of water Find out 1.What they mean 2.How they benefit living organisms Cohesive Adhesive High specific heat capacity High latent heat of vaporisation High boiling point Solvent

4. Water Properties State the properties of water Relate the properties of water to living organisms Describe how hydrogen bonds form between water molecules Explain how substances can be hydrophobic or hydrophilic Explain how water can be used as a coolant Compare thermal properties of water and methane Describe how substances are transported in blood

5. Covalent bonds between hydrogen and oxygen to make water Unequal sharing of electrons Hydrogen bonding

6. Oxygen has a partial negative charge Hydrogen has a partial positive charge They form poles – one side positive, one negative Hydrogen bonding

7. These weak forces charges hydrogen bonds Oxygen and hydrogen is attracted together Hydrogen bonding

8. Many of them are attracted together – the hydrogen bonding gives water it’s unique properties Hydrogen bonding

9. Water Properties State the properties of water Relate the properties of water to living organisms Describe how hydrogen bonds form between water molecules Explain how substances can be hydrophobic or hydrophilic Explain how water can be used as a coolant Compare thermal properties of water and methane Describe how substances are transported in blood

10. Hydrophobic and hydrophilic What does it mean? Example Hydrophobic Hydrophilic

11. Water Properties State the properties of water Relate the properties of water to living organisms Describe how hydrogen bonds form between water molecules Explain how substances can be hydrophobic or hydrophilic Explain how water can be used as a coolant Compare thermal properties of water and methane Describe how substances are transported in blood

12. Your tasks (Page 71-73) 1.How does sweat cool you down? 2.Compare the thermal properties of water and methane -How are their properties similar and different? -Why? 3. How are the following transported in your blood (with regards to solubility in water) -Sodium chloride -Amino acids -Glucose -Oxygen -Fats -Cholesterol