Question

2b. explain how you made your decisions in parts a. what details in the diagrams helped you determine your answers? (4 points)

Explanation:

In the particle - diagram for iron (an element), there is only one type of particle (represented by triangles), indicating a pure substance made of one kind of atom. For iron sulfide (a compound), the diagram shows a fixed ratio of two different types of particles (triangles and circles) bonded together, characteristic of a compound. In the iron - sulfur mixture, there are separate, un - bonded particles of both types (triangles and circles), showing that the substances are not chemically combined.

Answer:

The element diagram has only one type of particle, the compound diagram has fixed - ratio bonded particles, and the mixture diagram has separate un - bonded particles.