In the barium chloride laboratory activity, what change occurred in the physical appearance of the barium chloride during the heating process?
A. Barium chloride changed from sparkly white to dull white.
B. Barium chloride changed from dull white to sparkly white.
C. Barium chloride changed from sparkly yellow to dull yellow.
D. Barium chloride changed from dull yellow to sparkly yellow.



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