Chemical Reactions with Liquid Nitrogen Quiz

What is the primary reason for using a Pyrex beaker or metal bowl instead of a normal glass container in this experiment?

• Normal glass is too heavy to handle.

• Normal glass cannot withstand the cold shock.

• Pyrex and metal are more aesthetically pleasing.

• Pyrex and metal are cheaper than normal glass.

What happens to the glow stick when it is placed in liquid nitrogen?

• The glow dims and eventually stops.

• It changes color.

• It glows brighter immediately.

• It starts to melt.

What is the role of hydrogen peroxide in the glow stick reaction?

• It is a reactant that mixes with dieny oxalate.

• It acts as a dye.

• It prevents the glow stick from breaking.

• It cools down the reaction.

Why does the glow of the glow stick return when removed from liquid nitrogen?

• The glow stick absorbs heat from the environment.

• The glow stick is broken again.

• The glow stick is shaken.

• The glow stick is exposed to sunlight.

What is the potential risk of heating glow sticks beyond room temperature?

• They will become non-functional.

• They might explode.

• They will lose their color.

• They will become too bright.