Metallic bonding Quiz
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5 questions, one answer each
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1. Which particles are found in a giant metallic lattice?
- A. Positive ions and delocalised electrons
- B. Positive and negative ions
- C. Atoms joined by shared electron pairs
- D. Separate molecules
2. What carries the charge when a metal conducts electricity?
- A. Positive ions
- B. Negative ions
- C. Delocalised electrons
- D. Atoms
3. Why is the melting temperature of aluminium higher than that of sodium?
- A. Aluminium atoms are heavier
- B. Al³⁺ ions are smaller and more highly charged and there are three delocalised electrons per atom, so the attraction is stronger
- C. Aluminium has covalent bonds between its atoms
- D. Aluminium has fewer electrons in its sea of electrons
4. Which statement about metallic bonding is correct?
- A. It is the attraction between positive ions and negative ions
- B. It is a shared pair of electrons between two atoms
- C. It acts in all directions, so layers of ions can slide without the metal breaking
- D. It is broken completely when a metal melts
5. Potassium melts at 63 °C and lithium at 181 °C. What is the best explanation?
- A. Potassium ions are larger, so the attraction to the delocalised electrons is weaker
- B. Potassium has more delocalised electrons per atom
- C. Potassium ions carry a larger charge
- D. Lithium atoms have a larger relative atomic mass