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.
4. They conduct electricity well when dissolved in water. This is because the ionic compound is made up of ions, which are all either positively or negatively charged. When the ions are separated in water, they allow the electrons to flow.5. As a solid, ionic compounds are good insulators.xamples of ionic compounds include pyrite, FeS2. Remember that an ionic bond is formed through the transfer of electrons. These compounds are usually formed between metals and non-metals. The ratio of cations to anions is always in a way that there is no net charge.