How is compound different from a mixture? a. it is made of one substance b. it cannot be made of organic materials c. it cannot be broken down d. it cannot be separated by a physical change

  I think it should be D. it cannot be separated by a physical change

A compound is chemically bonded together atoms and a mixture is two substances combined, i think its D

No table found. the question asks for covalent bond based on electronegativies

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.