Question

lodestone is a name for a naturally occurring magnetic material that is also called ______.
a. copper
b. magnetite
c. magnetism
d. lead

Explanation:

Identify the core question

The question asks for the alternative name of a naturally occurring magnetic material known as lodestone.

Analyze the options

Using the Magnetic Materials knowledge point

• copper: A non-magnetic metal.
• magnetite: A naturally magnetized mineral of iron oxide (\(\text{Fe}_3\text{O}_4\)), historically known as lodestone.
• magnetism: The physical phenomenon produced by the motion of electric charge, not a material.
• lead: A heavy, non-magnetic post-transition metal.

Select the correct option

The mineral magnetite is the scientific name for lodestone.

Answer:

• a. copper
• b. magnetite (Correct answer)
• c. magnetism
• d. lead