Final answer:
Calcium carbide is a flammable solid that is dangerously reactive in air and has a melting point of 44.2°C.
Step-by-step explanation:
Calcium carbide is a flammable solid. It is a volatile waxy white solid that is dangerously reactive in air, causing it to glow with a white light and spontaneously burst into flame. Its melting point is 44.2°C.