Final answer:
The question refers to the description of various substances with unique properties, which seem to cover different minerals and potentially reactive chemical elements like white phosphorus, indicating a topic within the Chemistry subject, specifically related to mineralogy or geochemistry.
Step-by-step explanation:
The description provided points to several different substances with unique properties, likely from a mineralogy or chemistry perspective. For example, a nonmetallic substance with a green to white color, greasy feel, and pearly luster might refer to a mineral such as talc or soapstone.
The mention of a volatile waxy white solid that is dangerously reactive in air, glowing white, and bursting into flame with a melting point of 44.2°C describes a substance like white phosphorus. White phosphorus exhibits these properties due to its high reactivity, especially upon exposure to air, which can cause it to ignite spontaneously at room temperature.
Some of the descriptions, such as very thin, irregular layers of mica, satin sheen, and the appearance of minerals like quartz and feldspar, are typical in the study of rocks and minerals, further confirming the subject as Chemistry, more specifically geochemistry or mineralogy.
Lastly, properties such as shiny, malleable, ductile, and the ability to conduct heat and electricity well are characteristics of metals.