Question

What is dry ice? what happens when the pressure under which it is stored is decreased to 1 atmosphere?

Answer 1

dry ice is the another name of solid carbon dioxide

Answer 2

Dry ice is solid carbon dioxide. It is primarily used to cool food products at lower temperature than what water ice can provide.It is called dry ice because it sublimes and doesn't leave any residue i.e. changes from solid to gaseous state without turning to liquid.