CH-249
Giant covalent structures
Chemistry · Secondary 3 · Medium · Giant covalent structures
Graphite is used as a lubricant in machinery. Which feature of its structure mainly allows it to act as a lubricant?
- Each carbon atom forms only single bonds with hydrogen.
- Graphite has layers of atoms that can slide over each other easily.
- Graphite is made of separate small molecules that evaporate.
- Graphite contains metal ions that are free to move.
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