CAST Grade 8 Practice Questions - California Science Test (CAST) - Grade 8 Exam

In the middle school model of matter, which description of an atom is most accurate?

The smallest particle of an element that still has that element's properties A molecule made of many different elements bonded together A cell that can reproduce on its own A force field that has no mass

Correct Answer:

The smallest particle of an element that still has that element's properties

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