1. Show the class pictures of five very different mammals, such as a cat, kangaroo, horse, rabbit, and monkey. Explain that all these animals are mammals, and that mammals constitute one class of the animal kingdom, which also includes other classes, such as reptiles, birds, and fish. Ask students what these five mammals have in common and mark their responses on a sheet of chart paper.
When ionic compounds are in a molten state or dissolved in water, forming an aqueous solution, the ions that formed the ionic compounds are able to move around freely, thus able to conduct electricity.
You're right :) A is false; Ionic structures conduct electricity in molten state or in solution, because the moving ions in solution carry electric current. B is false; Ionic compounds have high melting and boiling points due to the strong bonds within them, thus they are mostly solids in room temperature.