What is convection? a. the transfer of heat energy that doesn’t involve matter b. the transfer of heat energy from solids to liquids and gases c. the transfer of heat energy between objects that are touching d. the transfer of heat energy due to the motion of warmed material

Amixture with the same composition throughout is!

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas