(credit: modification of work by Chemicalinterest, PD in Chemistry (OpenStax), CC BY 4.0). In a given compound, the numbers of atoms of each of its elements are always present in the same ratio (Figure 5.1b).įigure 5.1b: Macroscopic vs microscopic visual of the compound copper(II) oxide: copper(II) oxide, a powdery, black compound, results from the combination of two types of atoms-copper (brown, larger spheres) and oxygen (red, smaller spheres)-in a 1:1 ratio.
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