Sublimation

The video tutorial explains the process of sublimation, where a substance transitions directly from a solid to a gas without passing through a liquid stage. It uses dry ice as an example, describing how solid carbon dioxide sublimates when heated. The tutorial also covers the sublimation of water in comets as they approach the sun, which results in the release of dust particles and the formation of a comet's tail.

What happens to solid carbon dioxide when it is heated?

Describe the process that occurs when the temperature of solid carbon dioxide rises.

What occurs to water when comets pass close to the sun?

What is the result of dust particles being released from a comet?

Explain how the sublimation of water from comets affects their appearance.