Question

model 1 — atoms, particles, and molecules

1. identify which drawings from question 7 are pure substances and which are mixtures. list the codes for the drawings in the appropriate places below.

pure substances
mixtures

Explanation:

A pure substance has a uniform composition throughout, either an element (made of one - type of atom) or a compound (made of molecules with a fixed ratio of atoms). A mixture has two or more different substances physically combined. We need to analyze each drawing from Question 7 to see if it has a single - type of particle (pure substance) or multiple types of particles (mixture).

Answer:

Without seeing the specific drawings from Question 7, we cannot list the codes. But in general, if a drawing has only one type of atom or one type of molecule, its code would go under Pure Substances. If it has two or more different types of atoms or molecules, its code would go under Mixtures.