Problem: Classify each of the following molecular diagrams as a pure substance or a mixture.

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Recall that Matter can be categorized as a single or variable composition.

• Matter is considered a pure substance if it is composed of a single entity. 

• Matter is considered a mixture if they have variable composition. Mixtures are not chemically combined. 

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Problem Details

Classify each of the following molecular diagrams as a pure substance or a mixture.

The diagram shows brown spheres arranged in an ordered structure.The diagram shows molecules of two types. Molecules of the first type consist of two black spheres and one red sphere, with three white spheres bonded to the first black sphere, two white spheres bonded to the second black sphere, and one white sphere bonded to the red sphere. Molecules of the second type consist of two white spheres bonded to a red sphere.The diagram shows molecules consisting of five black spheres connected successively, with three white spheres bonded to the terminal black spheres and two white spheres bonded to the rest of black spheres.The diagram shows molecules consisting of two black spheres and one red sphere connected successively, with three white spheres bonded to the first black sphere, two white spheres bonded to the second black sphere, and one white sphere bonded to the red sphere.

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Our tutors have indicated that to solve this problem you will need to apply the Classification of Matter concept. You can view video lessons to learn Classification of Matter. Or if you need more Classification of Matter practice, you can also practice Classification of Matter practice problems.

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Based on our data, we think this problem is relevant for Professor Brewer's class at UARK.