no, dry ice will sublimate at room temperature, while ice will melt at room temperature. Dry ice is solid carbon dioxide (CO2) and white. It will sublimate into gas at-78.5℃ and ambient atmospheric pressure, and is widely used as Leng Yun catalyst in weather modification. Carbon dioxide is a colorless and odorless gas, which naturally exists in the air. Although the content of carbon dioxide in the air is relatively small (about 1.13% by volume), it is one of the most important gases we know. Dry ice is very volatile, and sublimates into non-toxic, odorless gas carbon dioxide, which is 1111 times larger than the solid area. Therefore, dry ice cannot be stored in containers with good sealing performance and small volume, and it is easy to explode. It is safe to put dry ice in a well-ventilated place and let the gas generated by dry ice volatilization be released.

dry ice is solid carbon dioxide. At normal temperature and pressure of 6179.8 kPa, carbon dioxide is condensed into colorless liquid, and then quickly evaporated at low pressure, and then condensed into compacted ice-like solid substances. Its temperature is-78.5℃, which is dry ice. The cold storage capacity of dry ice is more than 1.5 times that of water ice. After absorbing heat, it sublimates into carbon dioxide gas, without any residue, toxicity and odor, and has sterilization effect. It sublimates directly after being heated without liquefaction. Dry ice is the solid state of carbon dioxide. Because the temperature of dry ice is very low, the temperature is MINUS 78.5℃, so it is often used to keep objects in a frozen or low temperature state. At room temperature, when carbon dioxide gas is pressurized to about 111325Pa, when a part of steam is cooled to about -56℃, it will freeze into snowflake-like solid carbon dioxide. The gasification heat of solid carbon dioxide is very high, which is 364.5 J/g at -61℃. When it is gasified at atmospheric pressure, the ambient temperature can be reduced to about -78℃, and no liquid will be produced, so it is called "dry ice

dry ice

". Dry ice can also be used as artificial rainfall, which can quickly absorb a lot of heat in the air, so that the surrounding temperature can be quickly lowered, and the water vapor can be liquefied into small water droplets, thus achieving the purpose of rainfall. In addition, silver iodide AgI and other substances have similar properties.

water in nature has three states: gas, solid and liquid. We call liquid water, gaseous water vapor and solid water ice. The heat of fusion of ice is 3.35× 11 5j/kg.