Question

model 1 — atoms, particles, and molecules

1. appoint one group member to cut apart model 1 so separate the nine drawings. as a team, sort the drawings into two - groups: one group where all the particles in the drawing are identical, and a second group in which the drawings contain more than one type of particle.

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matter is classified as a pure substance when all of the particles are identical. matter is classified as a mixture if there are different types of particles present.

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:

Step1: Understand pure - substance and mixture

Pure substances have identical particles, mixtures have different types of particles.

Step2: Analyze each drawing

Examine each drawing in Model 1 to see if particles are all the same or different.

Step3: Categorize drawings

For drawings with all - identical particles, list them as pure substances; for those with different particles, list as mixtures.

Let's assume the drawings are labeled as Drawing 1 - Drawing 9 for simplicity.
If Drawing 1 has all identical circles, it's a pure substance. If Drawing 2 has circles, squares and triangles, it's a mixture.

Answer:

Pure Substances: List the codes of drawings with all identical particles.
Mixtures: List the codes of drawings with different types of particles.