Alaska Science Grade 8 Practice Questions - Alaska Science Assessment, Grade 8 Exam

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A student models atoms of element X as one type of sphere and atoms of element Y as another type. Which diagram BEST represents a molecule of a compound made from X and Y?

Three X spheres not bonded to anything. A pile of X and Y spheres mixed but not bonded. Only Y spheres bonded to each other. Two X spheres bonded to one Y sphere.

Correct Answer:

Two X spheres bonded to one Y sphere.

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