Question

elements that act like both a metal and a nonmetal are called _______.
subscripts
families
metalloids
reactors

Explanation:

To solve this, we analyze each option:

• Subscripts: Used in chemical formulas to show atom counts, not related to element properties.
• Families: Groups of elements with similar properties, not describing elements with both metal and nonmetal traits.
• Metalloids: By definition, elements that have properties of both metals and nonmetals (e.g., silicon, germanium).
• Reactors: Not a term for classifying elements based on metal/nonmetal behavior.

Answer:

C. metalloids