Water and Its Properties Quiz

What is the molecular formula of water?

• H2O

• CO2

• O2

• H2

What percentage of a cell's cytosol is composed of water?

• 50%

• 70%

• 90%

• 30%

What role does water play in maintaining temperature in cells?

• Increases temperature

• Decreases temperature

• Acts as a temperature buffer

• Has no effect on temperature

What is the charge on the oxygen atom in a water molecule due to polarity?

• Slightly positive (δ+)

• Slightly negative (δ-)

• Neutral

• Fully positive

What is the charge on the hydrogen atom in a water molecule due to polarity?

• Slightly positive (δ+)

• Slightly negative (δ-)

• Neutral

• Fully negative

What type of bond involves the sharing of electrons equally?

• Ionic bond

• Covalent bond

• Polar bond

• Hydrogen bond

What type of bond involves unequal sharing of electrons?

• Ionic bond

• Covalent bond

• Polar bond

• Hydrogen bond

What is the role of water in photosynthesis?

• It acts as a product

• It acts as a substrate

• It acts as a catalyst

• It has no role

What is the role of hydrogen bonds in water molecules?

• They prevent water from freezing

• They allow water to evaporate easily

• They contribute to water's unique properties

• They have no role

What property of water allows it to dissolve a large number of substances?

• Cohesive properties

• Thermal properties

• Solvent properties

• Physical properties