Dry ice is so cold that if you touch it it will burn. Carbon dioxide is the air you breath out every day. This is dry ice forming into carbon dioxide gas.
Carbon dioxide goes through the process called sublimation.
This means it will never become liquid. This is dry ice in a florence flask. The balloon is strapped on top of the flask. The carbon dioxide is filling up the balloon. If you put the balloon on top of a candle and let the air out, the candle will blow out.