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.
Solids. Ionic compounds conduct electricity well when -----. Ionic compounds dissolve in water. DEFINITION-. Covalent bond-. Chemical bond formed when two atoms share electrons. Double Bond-. A chemical bond formed when atoms share two pairs of electrons. Molecular Compounds contain-----. Molecules having covalently bonded atoms. Molecular compounds have a slight electrical charge because-----. Some atoms pull more strongly on the shared electrons than other atoms do.