Question

Shayla is modeling different kinds of substances. If Shayla’s model contains only one type of atom, what is the BEST way to classify the model?

molecule
compound
pure substance
homogeneous mixture

Answer 1

The best way to classify Shayla's model, which contains only one type of atom, is as a **pure substance**. A pure substance is defined as a material that has a consistent composition and properties throughout, and a model consisting of only one type of atom fits this definition. It can also be a **chemical element**, but in the context of the provided options, "pure substance" is the most appropriate classification.