Question 1
Separation of MixturesWhen a solid substance disappears completely as a gas on heating, the substance is said to have undergone
- A.evaporation
- B.distillation
- C.crystallization
- D.sublimation
Show the answer and explanation
Answer: D (sublimation)
Explanation
Sublimation is a change straight from solid to gas without melting, as with iodine or ammonium chloride.