Question

Suzy's science class is studying changes in particle motion during phase changes. Suzy is asked to add a few pieces of dry ice to a flask and cover it with a balloon. After a few minutes she observed the balloon starting to inflate. How can she explain this?

Answer 1

the dry ice is so cold it turns directly into carbon dioxide gas rather than a liquid so the balloon starts to get blown up

Answer 2

Answer: This happens because dry ice sublimates.

Explanation:

Dry ice is the solid phase of carbon dioxide and it is a sublimating substance.

Sublimating substance is a substance which undergoes the process of sublimation.

Sublimation is defined as the physical process in which a substance directly changes its state from solid state to gas state.

$Solid\rightleftharpoons Gas$

Dry ice directly changes its state from solid (dry ice) to Gas [tex(CO_2)[/tex]. As, carbon dioxide releases, it inflates the balloon.

Hence, dry ice sublimates into carbon dioxide gas and thus inflating the balloon.