f a substance causes another substance to be oxidized, that substance is a(n) agent. Likewise, the substance that is oxidized in an electrochemical reaction is always the agent.

They did not study the continental drift

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.