Zinc is a pure substance. How could you make a mixture from a 1.0-g zinc disc?
A)Compress the disc into a flatter shape.
B)Divide the disc into 5 small pieces.
C)Coat the disc with another pure substance, such as copper.
D)Place the disc in a beaker with 200 mL of sulfuric acid.

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

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im doing test rn im going with 2 but ill give answer if itss wrong,   : )