CH-228
Giant covalent structures
Chemistry · Secondary 3 · Medium · Giant covalent structures
Tempered glass is used for making smartphone screens. It does not conduct electricity even when very hot. Which statement best explains this?
- It has no free electrons or ions to carry charge.
- Its covalent bonds break easily when heated.
- It contains delocalised electrons like metals.
- Its ions are free to move only at room temperature.
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