Question

what is the best conductor of electricity?

aluminum
gasoline
protein
lipids

Explanation:

Identify the question goal

The question asks to identify the best conductor of electricity among the given choices.

Analyze the properties of aluminum

Using the Electrical Conductivity knowledge point

• Aluminum is a metal with highly mobile, delocalized valence electrons.
• This metallic bonding structure allows it to conduct electric current exceptionally well.

Analyze the remaining options

Using the Organic Compounds knowledge point

• Gasoline, proteins, and lipids are covalent organic molecules.
• They lack free-moving ions or delocalized electrons, making them poor electrical conductors (insulators).

Compare and conclude

• Aluminum is a highly efficient electrical conductor.
• The other three substances are insulators.
• Therefore, aluminum is the correct choice.

Answer:

• (A) aluminum (Correct answer)
• (B) gasoline
• (C) protein
• (D) lipids