Understanding Sodium and Its Reactions

The video tutorial explains the reactivity of sodium and why it is stored in kerosene oil. It covers sodium's atomic structure, its reactions with oxygen and water, and the safety measures necessary to handle sodium safely. The tutorial emphasizes the spontaneous nature of these reactions and the energy released, highlighting the importance of storing sodium in kerosene to prevent accidents.

Why is sodium stored in kerosene oil?

• To reduce its weight

• To make it more stable

• To enhance its reactivity

• To prevent it from reacting with oxygen and moisture

What is a spontaneous reaction?

• A reaction that does not release energy

• A reaction that is slow and controlled

• A reaction that occurs on its own without external input

• A reaction that requires external energy

What happens when sodium is exposed to air?

• It evaporates

• It forms sodium chloride

• It remains unchanged

• It forms sodium oxide

What is the atomic number of sodium?

• 11

• 13

• 10

• 12

Why does sodium tend to lose one electron?

• To increase its atomic number

• To achieve a stable electronic configuration

• To become a noble gas

• To decrease its atomic mass

What compound is formed when sodium reacts with water?

• Sodium chloride

• Sodium hydroxide

• Sodium sulfate

• Sodium carbonate

What is the result of sodium reacting with oxygen?

• Formation of sodium nitrate

• Formation of sodium oxide

• Formation of sodium chloride

• Formation of sodium sulfate

What is the primary reason for storing sodium in kerosene oil?

• To enhance its color

• To prevent it from melting

• To increase its density

• To prevent accidental fires

What happens if sodium is left exposed to air?

• It becomes heavier

• It dissolves

• It catches fire

• It becomes inert

What is the role of kerosene oil in storing sodium?

• It increases sodium's reactivity

• It changes sodium's color

• It prevents sodium from reacting with air

• It acts as a catalyst