It was determined that Substance A is a covalent molecular substance as it is a liquid at room temperature and therefore has a low melting point which is a property of a covalent molecular substance. Substance B was found to be a metallic substance as it demonstrated properties such as high melting point, conductivity as a solid etc. Substance C was found to be a covalent network structure as it did not conduct and was very hard and had a high melting point. Both Substances D and E were very brittle, had a high melting point and conducted in a solution, therefore it can be concluded that they are an ionic substance.
It is assumed that Substance B is aluminium as it appears silvery and melts into a bead like shape. Substance C is likely to be
It is assumed that Substance B is aluminium as it appears silvery and melts into a bead like shape. Substance C is likely to be