SYI Water

What is the primary medium for metabolic reactions in cells?

• Water
• Oxygen
• Hydrogen
• Nitrogen

What type of bonding holds together the atoms in a water molecule?

• Covalent bonding
• Ionic bonding
• Hydrogen bonding
• Van der Waals forces

What is the result of the uneven sharing of electrons between oxygen and hydrogen atoms in water?

• Polar molecule
• Non-polar molecule
• Ionic molecule
• Covalent molecule

What is the term for the separation of charge in a polar molecule?

• Dipole
• Ion
• Bond
• Isotope

What type of bonds form between water molecules due to their polarity?

• Ionic bonds
• Metallic bonds
• Covalent bonds
• Hydrogen bonds
• Van der Waals forces

What term describes the amount of thermal energy required to raise the temperature of water?

• Specific heat capacity
• Latent heat of vaporisation
• Specific latent heat
• Heat capacity

What advantage does water's high specific heat capacity provide for living organisms?

• Provides suitable habitats
• Helps maintain constant temperature
• Facilitates chemical reactions
• Enhances heat absorption

What property of water allows it to provide a cooling effect when it evaporates?

• Low specific heat capacity
• High latent heat of vaporisation
• Low surface tension and cohesion
• High solvent power

What phenomenon occurs when water molecules at the surface of a body of water create a film due to hydrogen bonding?

• Adhesion
• Transpiration
• Surface tension
• Cohesion

What type of bonding enables water to move up the xylem in plants?

• Cohesion
• Adhesion
• Surface tension
• Hydrogen bonding