Question

Julie takes a cold glass of clear, colorless liquid out of the refrigerator and puts it on the table. As the liquid warms up to room temperature, Julie sees bubbles of gas form in the liquid and rise to the surface. Which conclusion is best supported by Julie’s observations? The liquid is a pure substance because it is colorless. The liquid is a mixture because its temperature rises. The liquid is a pure substance because it remains liquid when cold. The liquid is a mixture because it has a gas dissolved in a liquid.

Answer 1

the liquid is a pure one bcoz the details given for mixture is all comes under common things

Answer 2

The conclusion stated that the liquid is a mixture because it has a gas dissolved in a liquid best supports Julie's observation.

Explanation:

• The ability to produce bubbles is a unique property of the mixture which is composed of liquid and gas.
• In the given scenario until the liquid was below the room temperature it was not producing any bubbles and it was reaming still.
• As it was kept in the room temperature due to an increase in temperature it starts to boil and starts to produce a bubble of gas.
• As the liquid mixture contains gas, upon increasing the temperature the gas bubble forms.
• Thus option d is considered as a correct observation.

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