Nebraska NSCAS Science Grade 5 Practice Questions - Nebraska Student-Centered Assessment System Science - Grade 5 Exam

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A student seals a small amount of rubbing alcohol in a clear bag. The next day the liquid is gone, but the bag looks slightly puffed up. What is the best explanation using a particle model?

The alcohol particles spread out into the space in the bag as a gas and are still inside The alcohol particles passed through the sealed plastic and left the bag The alcohol particles were used up and no longer exist The alcohol particles turned into plastic

Correct Answer:

The alcohol particles spread out into the space in the bag as a gas and are still inside

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