Sublimation

The video tutorial explains the three states of matter: solid, liquid, and gas, and how substances can transition between these states through processes like freezing and sublimation. Freezing is when a liquid becomes a solid, exemplified by water turning into ice. Sublimation, a less common process, involves a solid becoming a gas without passing through a liquid state, as seen with dry ice and iodine. The tutorial highlights that matter can change states in surprising ways, challenging the notion that solids only melt and liquids only evaporate.

Which of the following is a common process where a liquid turns into a solid?

• Freezing

• Sublimation

• Condensation

• Evaporation

What is the process called when a solid changes directly into a gas?

• Melting

• Sublimation

• Condensation

• Freezing

Which of the following is an example of sublimation?

• Ice melting

• Salt dissolving in water

• Dry ice turning into fog

• Water boiling

What household item uses sublimation to release fragrance into the air?

• Candle

• Dehumidifier

• Air freshener

• Humidifier

Which element turns from a solid to a purple gas when heated below its boiling point?

• Sulfur

• Iodine

• Oxygen

• Carbon