the white solid is a compound explain the difference between mixture of zinc and sulfur are the compound formed by the chemical reaction between them​

Zinc is a bluish-white metal used to galvanize iron, and is also found in alloys, batteries, and rubber.  Sulfur is a yellow, brittle nonmetal; it can also be found in a powered form.  Zinc and sulfur react with each other violently to produce zinc sulfide; the reaction is accompanied by a vigorous evolution of gas, heat, and light:

Zn(s)  +  S(s)  ——>  ZnS(s)  [one of the easier  

chemical equations  

to balance!]

The products of the reaction also include small amounts of zinc oxide (ZnO) and sulfur dioxide (SO2).

This reaction produces enough hot gas to propel small rockets; this was one of the model rocket propellants described by Homer Hickam in his book Rocket Boys (Delacorte Pr; 1998) [filmed as October Sky (Universal Studios, 1999)].

In the first demonstration below, powdered zinc and sulfur are mixed in a porcelain evaporating dish and heated with a flame; the mixture burns with a yellowish-green flame, and leaves a residue of yellow zinc sulfide in the dish.  In the second video clip, a larger sample is ignited in an evaporating dish, which shatters; and in the third clip, a similar mixture cracks a large porcelain crucible.

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