Question

On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen seeing her breath in this way?

Answer 1

Condensation

Step-by-step explanation

If it is cold outside the gaseous water molecules in our breath start accumulating in atomic/molecular clusters which then turns into the breath we are able to see. This process is known as condensation.

Answer 2

It's cold outside, the water vaper in your breath condenses into tiny droplets of liquid water and ice that you can see.