Question

3 The following description lists several properties of a substance: – Reddish in color, shiny, ductile, and malleable. – Becomes dull when exposed to air. – In moist air gradually becomes coated with a green-colored layer. – Melts at 1084.62 °C. – Boils at 2562 °C. Based on the properties above, which type of matter is described? A glass B metal C plastic D diamond

Answer 1

The properties listed in the description suggest that the substance is a metal. The reddish color, shiny appearance, ductility, and malleability are typical characteristics of metals. Additionally, the fact that it becomes dull when exposed to air and develops a green-colored layer in moist air indicates it might be a type of copper or a copper alloy, which is known for tarnishing and forming a green patina (copper oxide) over time.

The melting and boiling points provided (1084.62 °C for melting and 2562 °C for boiling) are also consistent with metals.

Given these properties, the correct answer is:

B metal