Hydrogen bonding and properties of water Quiz
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5 questions, one answer each
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1. Which statement about hydrogen bonds in water is correct?
- A. Each water molecule can form up to four hydrogen bonds
- B. Each water molecule can form only one hydrogen bond
- C. Hydrogen bonds are stronger than the O–H covalent bonds
- D. Hydrogen bonds form between two hydrogen atoms
2. Why does water have a higher boiling temperature than H₂S?
- A. The O–H bond is stronger than the S–H bond so it breaks less easily on boiling
- B. Water has hydrogen bonds between molecules, but H₂S does not
- C. Water has more electrons than H₂S
- D. H₂S molecules are not polar
3. What is the arrangement of molecules in ice?
- A. A random arrangement with no hydrogen bonds
- B. A close-packed lattice with no hydrogen bonds
- C. A regular open lattice, with each molecule held by four hydrogen bonds
- D. A lattice in which each molecule is held by two hydrogen bonds
4. What happens when ice melts?
- A. All the hydrogen bonds break
- B. The covalent O–H bonds break
- C. The molecules move further apart
- D. Some hydrogen bonds break and the molecules pack more closely
5. 500 g of water at 273 K freezes. The density of ice is 0.92 g cm⁻³. What is the volume of the ice?
- A. 460 cm³
- B. 543 cm³
- C. 500 cm³
- D. 625 cm³