What is the more common name for solid carbon dioxide?

Dry Ice

The correct answer is option 1. Dry Ice.

Solid carbon dioxide is commonly known as "dry ice." The term "dry ice" is used because, unlike regular ice (frozen water), dry ice doesn't melt into a liquid at typical atmospheric pressures. Instead, it undergoes sublimation, which means it transitions directly from a solid to a gas. This sublimation process occurs at a temperature of around -78.5 degrees Celsius (-109.3 degrees Fahrenheit).

Dry ice is frequently used in various applications due to its unique properties. Some common uses include:

1. Cooling: Dry ice is used for keeping items cold during transportation of perishable goods, medical supplies, or even in certain laboratory settings.

2. Special Effects:  In the entertainment industry, dry ice is often used to create thick, fog-like effects in theatrical productions and haunted houses.

3. Food Industry:  It is used for freezing and transporting certain food products.

4. Scientific Experiments: Dry ice is used in laboratories for certain experiments and studies, especially those that require extremely cold temperatures.

The other options provided (Quick Silver, Epsom, and Potash) refer to different substances:

Quick Silver is an archaic name for mercury, a liquid metal.
Epsom usually refers to Epsom salt, a compound of magnesium, sulfur, and oxygen.
Potash generally refers to potassium-containing salts, often used in fertilizers.