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30 November, 20:01

A teacher does a demonstration for her science class. She has two beakers that are each filled with 100 mL of colorless liquid. She also has two identical pieces of magnesium metal. She drops one piece of magnesium into beaker 1 and the other piece into beaker 2. Which of the following observations would provide evidence that the beakers contain different substances? A.

Bubbling occurs around the magnesium in beaker 1, but there is no visible change in beaker 2.

B.

Bubbling occurs around the magnesium in both beakers.

C.

The magnesium sinks to the bottom of both beakers, but the pieces land in different positions.

D.

There is no visible change in either beaker.

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Answers (1)
  1. 30 November, 20:02
    0
    A.

    Bubbling occurs around the magnesium in beaker 1, but there is no visible change in beaker 2.
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