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10 questions from this quiz
Identifying substances using observations
Bubbles of gas appear (effervescence)
It turns cloudy or milky white
White
Yellow
AgCl\text{AgCl}AgCl only
Carbonate, then sulfate, then halide
BaCO3\text{BaCO}_3BaCO3 is white and would give false positive
Moist pH paper turns blue
BaCl2\text{BaCl}_2BaCl2 adds Cl−\text{Cl}^-Cl− ions causing false positive
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