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CO2, or carbon dioxide, will freeze at -78 degrees Celsius at normal pressure.
Wiki User
∙ 14y ago
Wiki User
∙ 12y ago0 degrees
Correction:
Dry ice is frozen CO2, it melts at -78 degrees Celsius and boils at -57
Wiki User
∙ 12y agoCompressed carbon dioxide gas is released from pressure, and expands. In expanding, it cools, and becomes solid carbon dioxide- dry ice.
Wiki User
∙ 14y agoAnything below 109.3 degrees Fahrenheit.
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What happens to the water temperature and water state as dry ice is added?
The temperature decrease and water can be transformed in ice.
Is the temperature at which dry ice evaporates a chemical or physical?
Physical Change
How does the temperature affect how fast dry ice turns into a gas?
The higher the temperature the more energy the particles of dry ice have. When they have enough energy they can break away from the solid structure and become gaseous. This process involves a Potential Energy Change NOT a Kinetic Energy Change; Therefore, the temperature will remain constant during this phase change; no matter how much you attempt to "change" the temperature. The Dry Ice may sublime faster as more energy may be "pumped" in as you try to raise the temperature.
What the dry ice temperature and how to make dry ice?
Dry ice has a very cold temperature of -109.3°F or -78.5°C. Dry ice is made when carbon dioxide (CO2) gas is compressed in a high-pressure container until it liquefies. Upon the release of pressure, some of the liquid turns into gas that cools some of the liquid into its solid state in the form of dry ice. Check link below for more information on dry ice and dry ice makers.
What physical change is skipped during the decomposition of dry ice?
Dry ice, the solid form of carbon dioxide, doesn't melt (turn into a liquid) under ordinary circumstances. It changes state directly from a solid into a gas. We term this change sublimation, and dry ice is said to sublime.
What is added to dry ice to make it change?
Essentially, dry ice will simply change from a solid straight to a gas through sublimation at room temperature. Nothing is needed to change the state of matter of dry ice except a higher temperature.
What is causing the change in dry ice and the water ice?
Temperature causes changes in dry and water ice
Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?
Dry ice undergoes sublimation, an exothermic change, at room temperature.
Can the temperature of dry ice change while experimenting?
Yes
What happens to the water temperature and water state as dry ice is added?
The temperature decrease and water can be transformed in ice.
Is dry ice a chemical change or a physical change?
I just had this question for a chemistry and it is a physical change
Can a solid change its state of matter straight to a gas?
Yes it can. It is called sublimation. Solid carbon dioxide (dry ice) sublimes at room temperature.
Is dry ice turning into Carbon dioxide physical or chemical?
It is a physical change of state. CO2 solid (dry ice) is still CO2 as a gas.What does change is the physical heat content of the substance. By absorbing heat the physical state is changed from a solid at -109.3 degrees F to a gas at -109.3 degrees F. All the heat absorbed for the change of state is used by the molecules to expand in size (external energy), rather than to change in temperature. There is also a small amount of energy loss due to this change (entropy). Another calculation made is internal energy which is the internal molecular motive energy of the substance.
Is the temperature of ice water lower than the temperature of dry ice in alcohol?
No. The temperature of dry ice is far lower than that of ice water.
Why is dry ice evaporation a physical chainge?
Dry ice is a solid form of cooled carbon dioxide. When it reaches room temperature it changes to gaseous carbon dioxide. Since, there is no change in the chemical composition of dry ice, it is called a physical change.
Could dry ice change the temperature in a small room?
Perhaps a small amount.
Is the temperature at which dry ice evaporates a chemical or physical?
Physical Change
