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? A) The cooling effect of the dry ice as it undergoes a phase change from solid to liquid expands the gas and inflates the balloon. B) While the dry ice cools the flask, it undergoes a phase change from solid to liquid. The greater freedom of the particles expands the balloon. C) As the temperature rises, the dry ice undergoes a phase change from solid to gas. The expanding gas molecules exert pressure on the walls of the balloon. D) The dry ice particles under go a phase change from solid to liquid as it warms to room temperature and experiences an increased volume which inflates the balloon.
Answers
Answer:
(C) As the temperature rises the ice undergoes a phase change from solid to gas .The expanding molecules exerts pressure on walls of the balloon.
Explanation : when you blow air the balloon inflates due to pressure of the moving molecules . here as dry ice sublimes to form gas its molecules to exert pressure causing the balloon to inflate.
Answer: C) As the temperature rises, the dry ice undergoes a phase change from solid to gas. The expanding gas molecules exert pressure on the walls of the balloon.
Explanation: As the temperature rises, the dry ice undergoes a phase change from solid to gas. The expanding gas exerts pressure on the walls of the balloon.
The increased temperature gives the particles increased energy to move. As the gas particles move and collide more they occupy more volume.