Which is an example of a container filled with a pure substance? *
a glass of iced tea
a tire filled with air
a bucket of salt water
a balloon filled with helium

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but