To choose the best description based on the labels (X, Y, and Z) in the model, we should consider the definitions of atoms, molecules, and particles in relation to water.
- A molecule of water (Hâ‚‚O) consists of 2 hydrogen atoms and 1 oxygen atom.
- Atoms are the smallest units of elements.
- Particles can refer to atoms, molecules, or any small constituent parts of matter.
Given these definitions, the best description could vary depending on what each label (X, Y, Z) corresponds to in the model.
However, without the specific characteristics of X, Y, and Z in the context of the model you mentioned, I can't definitively choose one option. If, for example, X represents an atom, Y represents a molecule, and Z represents a larger collection of molecules (a particle), then option D would be correct.
Without seeing the model, if you can provide more details about what X, Y, and Z represent in the context of the model, I could help determine the best answer. Otherwise, I would tentatively suggest option D based on a common interpretation.
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