Solids (1) (Key facts 84-94)
| The particles in ___ are positive ions and delocalised electrons. | metals |
| Solids with a low melting point have ___ forces between their particles. | weak |
| The forces between atoms in covalent network solids are very ___. | strong |
| The particles in a covalent molecular solid are ___. | molecules |
| Metals conduct electricity because they contain ___ electrons. | delocalised |
| Solids with a ___ melting point have strong forces between their particles. | high |
| The melting point of a solid indicates the ___ of the forces holding the particles together. | strength |
| When molecular substances vaporise, the molecules move apart, but the ___ within those molecules do not break. | bonds |
| Only substances containing charged particles that are free to move will conduct ___. | electricity |
| The particles in covalent network solids are ___. | atoms |
| Before a solid melts, the ___ holding its particles in fixed positions must be overcome. | forces |
| The particles in metals are ___ ions and delocalised electrons. | positive |
| Solids with a ___ melting point have weak forces between their particles. | low |
| ___ conduct electricity because they contain delocalised electrons. | metals |
| Solids with a high melting point have ___ forces between their particles. | strong |
| The ___ ___ of a solid indicates the strength of the forces between its particles. | melting point |
| Only substances containing ___ particles that are free to move can conduct electricity. | charged |
| The particles in covalent ___ solids are atoms. | network |
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