Explain electron transfer and the attraction between oppositely charged ions.
| English | Chinese |
|---|---|
| ionic bond | 离子键 |
| lattice | 晶格 |
| electrostatic attraction | 静电吸引 |
Try each question before opening its hint or answer. Use paper for calculations and diagrams.
Why is “one sodium chloride molecule” unsuitable for solid sodium chloride?
Think about the repeating structure, rather than a pair of ions.
Sodium chloride forms a giant ionic lattice, not separate molecules.
Explain why MgCl₂ needs two chloride ions for each magnesium ion.
The total positive and negative charges must cancel.
Mg²⁺ has charge +2. Two Cl⁻ ions provide total charge −2.
Define an ionic bond.
Name the attractive force and the particles involved.
A strong electrostatic attraction between oppositely charged ions.
Use the matching chapter worksheet. Attempt independently, compare your reasoning with your partner, then bring unresolved questions to your teacher.
Predict which states conduct. Change the state, then explain what carries charge.
Na has electron arrangement 2,8,1. Cl has 2,8,7.
Predict the charge on each atom after the transfer.
Predict: can charged particles move through this sample?
Molten salt is melted; aqueous salt is dissolved in water. These are different processes. This schematic shows mobility, not a full electrolysis circuit.