Question

which property do metalloids share with nonmetals?
both are gases at room temperature.
both can react to form acidic compounds.
both are very poor electrical conductors.
both can be pounded into thin sheets.

Explanation:

Metalloids and non - metals can react to form acidic compounds. Not all are gases at room temperature. Some metalloids are semi - conductors, not very poor conductors. Non - metals and metalloids are generally brittle and can't be pounded into thin sheets (malleability is a metallic property).

Answer:

Both can react to form acidic compounds.