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Quiz: Chemistry - Patterns In The Periodic Table

Question 1 of 12

Back in the lab, John tries dropping a piece of zinc into copper(II) sulfate solution. Which observation and explanation is correct?

Blue color darkens as more copper ions form.

Hydrogen gas evolves as zinc reacts with water in the solution.

No reaction occurs because zinc is less reactive than copper.

Zinc dissolves and brown copper forms because zinc is more reactive than copper.