Select the formulas of simple substances from the list: Al2O3, Pb (NO3) 2, Cu, CaC2
| May 26, 2021 | education
Simple substances are those substances that are formed by the atoms of one chemical element. For example, H2 is a diatomic hydrogen molecule, O3 is an ozone molecule, Mg is magnesium. Complex substances are chemical compounds that are formed by atoms of different elements connected to each other. For example, H2O is a water molecule consisting of 2 hydrogen atoms and 1 oxygen atom.
In this list, the simple substance is Cu (copper). The rest (aluminum oxide, lead nitrate, calcium carbide) are complex.
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