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.
Therefore, the electrical charge can be carried on these free moving electrons and the metal conducts the electricity. In solid sodium hydoxide, however, there are no free moving charged particles and so solid sodium hydroxide does not conduct. Add water, however, and the sodium hydroxide dissolves to form a solution.alcium Hydroxide cannot conduct electricity when it is in solid state but it can conduct electricity in aqueous solution state or molten state. This is because it is an ionic â¦ compound.