Water Chemistry Quiz

What is the molecular formula of water?

• H2O2

• H2O

• HO2

• H3O

What type of bond is responsible for the cohesion of water molecules?

• Ionic bond

• Metallic bond

• Hydrogen bond

• Covalent bond

What is the role of water in maintaining temperature in cells?

• It acts as a temperature buffer

• It increases temperature fluctuations

• It decreases temperature

• It has no effect on temperature

What causes the polarity in water molecules?

• Equal sharing of electrons

• Unequal sharing of electrons

• Loss of electrons

• Gain of electrons

What charge does oxygen acquire in a water molecule due to its electronegativity?

• Slightly positive (δ+)

• Neutral

• Slightly negative (δ-)

• Fully positive

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

• Cohesive properties

• Thermal properties

• Solvent properties

• Physical properties

What term describes substances that do not dissolve in water?

• Hydrophilic

• Hydrophobic

• Ionic

• Polar

What is the role of water in metabolic reactions?

• It acts as a medium for metabolic reactions

• It prevents metabolic reactions

• It slows down metabolic reactions

• It has no role in metabolic reactions

What is the significance of water's cohesive properties?

• They allow water to dissolve more substances

• They contribute to water's high surface tension

• They make water a poor transport medium

• They reduce water's density

In vascular plants, how are dissolved nutrients transported?

• Through blood plasma

• Via hydration shells

• Via xylem vessels

• Via phloem