Why can gases and liquids both transmit heat by convection? a. their particles are free to move away from each other b. they both have a fixed volume c. they both contain charged particles d. their particles both vibrate around fixed positions

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.