Setup is simple and generally involves only minor hazards, the main one being the low temperature of dry ice, which can cause frostbite upon skin contact.
[2][3] Simultaneously, a cloud of carbon dioxide is generated from the sublimation of dry ice due to the condensation of water vapor in the air.
However, once the dry ice is added, the solution becomes less alkaline as neutralization occurs which causes the color to slowly change as more hydrogen ions are continuously produced from the carbonic acid.
[2][4] Dry ice will naturally sublimate away in ambient air, but should always be kept in a well-ventilated area to prevent hazardous buildup of carbon dioxide gas or displacement of oxygen.
Symptoms of carbon dioxide overexposure include dizziness, headache, shortness of breath, hyperventilation, anxiety, and in certain individuals, panic attacks.