Final answer:
Identifying a substance as aluminum based solely on its melting and freezing points requires caution, as other properties must also match. The specific heat capacity and solidity state contribute to identifying substances and infer their melting points.
Step-by-step explanation:
Based on the information provided, and considering that the melting point and freezing point of a substance are identical, it can be concluded that a chemical substance with these points matching those of aluminum may indeed be aluminum.
However, the identity confirmation of chemical one as aluminum requires more than just the matching melting and freezing points; other properties and tests would also need to be consistent with aluminum to make a definitive conclusion. In science, particularly in chemistry, it's important to gather multiple pieces of evidence before identifying a substance.
For example, a specific heat capacity that matches that of aluminum, as stated in various comparable values from tables, supports the hypothesis that the unknown metal may be aluminum.
Additionally, understanding the solid-state and forms of different substances, such as germanium's covalent solid structure, the ionic solid of RbI, the molecular solid of hexamethylbenzene (C(CH₂)₆), and the metallic solid of zinc (Zn), gives insight into their properties, including their melting points.