Sodium Reactions and Properties

The video demonstrates the properties and reactions of sodium metal. When heated, sodium melts quickly and has a lower melting point than lithium. It reacts with oxygen in the air, resulting in combustion. The sodium flame test produces a brilliant yellow color, and the white smoke observed is sodium peroxide formation.

What happens to sodium metal when it is heated?

• It evaporates.

• It turns into gas.

• It remains solid.

• It melts rapidly.

How does the melting point of sodium compare to lithium?

• Sodium and lithium have the same melting point.

• Lithium has a lower melting point.

• Sodium has a higher melting point.

• Sodium has a lower melting point.

What occurs when sodium reacts with oxygen in the air?

• It freezes.

• It burns.

• It forms sodium chloride.

• It dissolves.

What color is observed during the sodium flame test?

• Blue

• Green

• Red

• Yellow

What is the white smoke formed during the reaction of sodium?

• Sodium chloride

• Sodium hydroxide

• Sodium oxide

• Sodium peroxide