Explanations:To understand the classification of materials as metals or non-metals, it is essential to know the defining characteristics of each. Metals are typically defined by their physical properties, such as being shiny, malleable, and conductive. They are also usually solid at room temperature and have a crystalline structure. Examples of metals include gold, silver, copper, and iron.
Non-metals, on the other hand, do not possess these properties. They are generally not shiny, do not conduct electricity or heat well, and are often brittle. Non-metals can exist in various states at room temperature, including gases (like oxygen and nitrogen), liquids (like bromine), and solids (like carbon and sulfur).
Resin is a non-metallic material that is often used in the production of plastics and adhesives. It is a type of polymer, which is a large molecule composed of repeating units. Resin does not have the properties of a metal, such as conductivity or malleability, and is therefore classified as a non-metal.
Gold, on the other hand, is a well-known metal. It is highly valued for its shiny appearance, malleability, and conductivity. Glass, while not a metal, is not typically classified as a non-metal in the context of this question. Glass is an amorphous solid, meaning it does not have a crystalline structure like metals do. However, it is not a non-metal in the traditional sense, as it does not share the typical properties of non-metals like carbon or sulfur.
Therefore, the correct answer to the question is resin, as it is the only non-metal among the given options. Understanding the properties and classification of materials is crucial in various fields, including chemistry, materials science, and engineering.