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A student mixes two clear liquids together. After a few minutes, a white powdery solid can be seen settling on the bottom of the test tube. Which of the following is a conclusion that the student can draw based on these observations? Question 12 options:

The two liquids have gone through a chemical change in which a new substance called a precipitate was produced.

The two liquids were pure substances before they were mixed.

The two liquids are toxic and should be handled with extreme caution.

The two liquids have been stored too long and are no longer good.

Respuesta :

Answer:

Option (1).

Explanation:

Precipitation reaction may be defined as the chemical reaction in which an insoluble substance called precipitate formed at the end of reaction. The ions are displaced twice during the precipitation reaction.

The mixing of two clear liquids forms a white substance. This substance is an insoluble precipitate that forms by the chemical combination of the reactants. The two reactants has undergone the chemical change that leads to the formation of precipitate.

Thus, the correct answer is option (1).

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