A metal workshop manufactures different household items such as plates, cooking pots, aluminium foil, water bottles, and storage containers. The workers need materials that can be beaten into thin sheets without breaking.
To compare different materials, they test aluminium, copper, iron, sulfur, coal, and wood by applying equal force with a hammer. They observe which materials can be flattened into thin sheets and which materials crack or break.
Based on the investigation, the workshop decides which materials are suitable for making household utensils.
Give answers for the given questions:
1. Which pair of materials is expected to behave similarly during the hammer test?
2. A new material remains unchanged even after repeated hammering and does not form a sheet. Based on the investigation, what is the most appropriate conclusion?