Answer
The bottle will float, and the aluminum will sink.
Work Step by Step
The bottle will float because it has a lower density than the liquid, and the aluminum will sink because it has a higher density than the liquid.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.