Question

Iodine, I2

, undergoes sublimation if it is heated under normal atmospheric pressure.

Is sublimation a physical or chemical change?

physical change

chemical change

As iodine undergoes a change of state from the solid phase to the gas phase, are the bonds between the iodine atoms broken?

yes

no

What happens to the distance between iodine molecules as iodine goes from the solid phase to the gas phase?

The molecules get closer together.

There is no change in the distance between iodine molecules as iodine goes from the solid phase to the gas phase.

The molecules get farther apart.

Is sublimation an exothermic or endothermic process?

exothermic

endothermic

In which state do iodine molecules have the most kinetic energy?

solid

gas

Answer 1

ANSWER-

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