1. results in a chemical change.
2. results in the reaction I2 ! 2 I.
3. does not affect the density of the iodine.
4. is an endothermic process.
5. is a chemical property of iodine.
1 Answer
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4. is an endothermic process.
(A change of state is not a chemical change; the I2 molecule does not dissociate in this condition; the density does change, a lot, when going from solid to gas; this is a physical, not a chemical, property.)
