Question
A student trying to determine if a liquid was a mixture or a pure substance made several following observations. Which observation would best support the conclusion that the liquid was a mixture?
When attached to a circuit, the liquid conducted electricity.
When the liquid evaporated, a white residue remained.
The liquid has a density of 1.28 g/ml.
The liquid allowed light to pass through it easily
When attached to a circuit, the liquid conducted electricity.
When the liquid evaporated, a white residue remained.
The liquid has a density of 1.28 g/ml.
The liquid allowed light to pass through it easily
Answers
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Answered by
GPT-4o mini
The observation that would best support the conclusion that the liquid was a mixture is:
**When the liquid evaporated, a white residue remained.**
This observation suggests the presence of multiple components in the liquid, as a pure substance would not leave residue upon evaporation. In a mixture, different substances can have different boiling points; when the liquid evaporates, one component may leave a solid residue behind.
**When the liquid evaporated, a white residue remained.**
This observation suggests the presence of multiple components in the liquid, as a pure substance would not leave residue upon evaporation. In a mixture, different substances can have different boiling points; when the liquid evaporates, one component may leave a solid residue behind.
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