Cool Facts about Dry Ice

What is the chemical formula of dry ice?

• O₂

• CH₄

• H₂O

• CO₂

What is the temperature of dry ice?

• -78.5 degrees Celsius

• 25.5 degrees Celsius

• -50.1 degrees Celsius

• 0 degrees Celsius

How does dry ice change from solid to gas without becoming a liquid?

• Sublimation

• Condensation

• Evaporation

• Freezing

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What are the safety precautions to be taken while handling dry ice?

• Use in a confined space

• Seal in an airtight container

• Handle with bare hands

• Wear insulated gloves, use in a well-ventilated area, and never seal dry ice in an airtight container.

What is the density of dry ice?

• 1.56 g/cm³

• 0.8 g/cm³

• 3.2 g/cm³

• 2.5 g/cm³

What is the sublimation point of dry ice?

• 0 °C (32 °F)

• 50 °C (122 °F)

• −78.5 °C (−109.3 °F)

• 100 °C (212 °F)

How does the physical appearance of dry ice differ from regular ice?

• Dry ice is a liquid with a bluish color.

• Dry ice looks like soft fluffy snow.

• Dry ice is a solid white material.

• Dry ice is a gas with a strong odor.

What is the main difference in the melting process of dry ice and regular ice?

• Dry ice melts into liquid water, while regular ice sublimates directly into gas.

• Dry ice sublimates directly into gas, while regular ice melts into liquid water.

• There is no difference in the melting process of dry ice and regular ice.

• Regular ice sublimates directly into gas, while dry ice melts into liquid water.

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How does the cooling effect of dry ice compare to regular ice?

• Dry ice and regular ice have the same cooling effect.

• Regular ice has a stronger cooling effect than dry ice.

• Dry ice has a stronger cooling effect than regular ice.

• Dry ice has a weaker cooling effect than regular ice.

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Compare the density of dry ice to that of water. Does dry ice sink in liquid water?

• No

• Yes