Properties and Behavior of Carbon Dioxide

The video demonstrates the properties of carbon dioxide using dry ice. It covers safety precautions when handling dry ice, the sublimation process, and experiments showing how CO2 can extinguish a candle due to its density. The video also illustrates the portability of CO2 and how bubbles can be suspended in it due to its higher density compared to air.

What is the primary source of carbon dioxide used in the experiment?

• Liquid carbon dioxide

• Carbon dioxide gas cylinder

• Dry ice

• Carbonated water

Why is it important to wear gloves when handling dry ice?

• To keep it clean

• To prevent it from melting

• To enhance grip

• To avoid frostbite

What happens to dry ice during sublimation?

• It evaporates slowly

• It turns directly into gas

• It remains solid

• It turns into liquid

Why does the candle go out when placed in a container filled with carbon dioxide?

• The candle absorbs carbon dioxide

• The candle wick is too short

• Carbon dioxide displaces oxygen

• Carbon dioxide is flammable

What is demonstrated by pouring carbon dioxide into a beaker with a burning candle?

• Carbon dioxide supports combustion

• Carbon dioxide is lighter than air

• Carbon dioxide extinguishes flames

• Carbon dioxide is visible

How is the portability of carbon dioxide demonstrated in the experiment?

• By freezing it

• By pouring it into different containers

• By mixing it with water

• By compressing it

What is the significance of bubbles floating on carbon dioxide?

• Bubbles are unaffected by carbon dioxide

• Bubbles are lighter than carbon dioxide

• Bubbles dissolve in carbon dioxide

• Bubbles are heavier than carbon dioxide

Why do bubbles float on the surface of carbon dioxide?

• Because carbon dioxide is less dense than air

• Because bubbles are solid

• Because carbon dioxide is more dense than air

• Because bubbles are filled with carbon dioxide

What property of carbon dioxide is highlighted by the bubble experiment?

• Its temperature

• Its density

• Its flammability

• Its color

What is the main reason carbon dioxide fills a container from the bottom up?

• It is a liquid at room temperature

• It is lighter than air

• It is denser than air

• It is attracted to the container walls