Is/are usually the best conductor/s. a. metals c. air b. water d. minerals select the best answer from the choices provided a b c d

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.