Jimmy put some dirt and water into a jar, put the lid on, and then shook the jar. The contents of the jar turned brown. Jimmy set the jar on the table and checked back every 5 minutes for 20 minutes. The pictures show what Jimmy saw.

Which of the following best explains what happened in the jar after 20 minutes?

A. The dirt and water combined to form new compounds.
B. The water and dirt combined to form a heterogeneous mixture.
C. The water dissolved some of the dirt particles, creating a solution.
D. The dirt broke down into elements and settled in the jar according to density.

Question

travag0108 travag0108

23-09-2021
Physics

contestada

Jimmy put some dirt and water into a jar, put the lid on, and then shook the jar. The contents of the jar turned brown. Jimmy set the jar on the table and checked back every 5 minutes for 20 minutes. The pictures show what Jimmy saw.

Which of the following best explains what happened in the jar after 20 minutes?

A. The dirt and water combined to form new compounds.
B. The water and dirt combined to form a heterogeneous mixture.
C. The water dissolved some of the dirt particles, creating a solution.
D. The dirt broke down into elements and settled in the jar according to density.

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moya1316 moya1316 · Answer 1 · 2021-10-02T11:07:04+02:00

The characteristics and types of mixture we can see that for the mixture of water and earth the correct answer is:

B) The water and dirt combined to form a heterogeneous mixture.

A solution is a mixture at the homogeneous molecular level, where it is not possible to differentiate the solute from the solvent.

A mixture is a combination of two or more substances without chemical reaction between them, in general the elements can be separated by physical means, for example filtering, distillation.

Mixtures can be divided into:

Homogeneous. There is a uniform composition throughout the mixture,

Heterogeneous. If you have two or more parts in the mixture, that is, there are several phases

In the case presented by shaking the two elements, water and earth, a mixture is formed that separates in time, due to the density of the elements of the earth, the densest part is deposited in the shell of the glass and the less eensa forta in the upper part of the glass. As there are two phases, one solid and the other liquid, the mixture is of a heterogeneous type.

We analyze the different alternatives

A) False. This would be a solution and it cannot be separated in time

B) True. Two phases are observed that change over time.

C) False. The water in the upper part is a bit cloudy from some small fraction of dissolved compounds, but can be separated by means of filtration.

D) False. The insoluble earth is deposited in time in the lower part if it is denser than water, but in the deposited part there is no separation of the chemical compounds of the earth.

In conclusion with the characteristics of the mixture we can find that the correct answer is:

B) The water and dirt combined to form a heterogeneous mixture.

Learn more about mixture here:

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