MCAT Chemistry Question — State Change | Next Step Test Prep MCAT Chemistry Question — State Change | Next Step Test Prep

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At low pressures and temperatures, water can go directly from ice to water vapor. This state change is known as:

 

a) sublimation

 

b) deposition

 

c) vaporization

 

d) gaseous melting

 

 

Explanation

 

A state change from solid to gas is sublimation.

 

a) sublimation, correct.

 

b) deposition, incorrect, Deposition is gas to solid.

 

c) vaporization, incorrect, vaporization is liquid to gas.

 

d) gaseous melting, incorrect, there is no such thing as gaseous melting.

 

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