Molecule Chemistry Example 4

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Example 4

medium
Explain why O2\text{O}_2 and O3\text{O}_3 (ozone) are both molecules of the same element but have different properties.

Solution

  1. 1
    O2\text{O}_2 contains 2 oxygen atoms bonded together, while O3\text{O}_3 contains 3 oxygen atoms. Both are molecules made only of oxygen (same element).
  2. 2
    The different number of atoms creates different molecular structures, which leads to different physical and chemical properties — O3\text{O}_3 is more reactive and has a distinct smell, while O2\text{O}_2 is odorless.

Answer

Same element, different number of atoms → different properties (allotropes).\text{Same element, different number of atoms → different properties (allotropes).}
Oxygen and ozone are allotropes — different structural forms of the same element. Allotropy demonstrates that properties depend not just on which atoms are present but on how they are arranged and bonded.

About Molecule

The smallest unit of a covalent substance, consisting of two or more atoms held together by chemical bonds (typically covalent), acting as a single distinct.

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More Molecule Examples

Example 1 easy

Define a molecule and explain the difference between a molecule of an element and a molecule of a co

Example 2 medium

The molecular formula of glucose is [formula]. How many total atoms are in one molecule of glucose?

Example 3 medium

How many atoms are in one molecule of [formula] (glucose)? How many molecules are in 1 mole of gluco

Example 5 hard

A molecule of aspirin has the formula [formula]. Calculate the total number of atoms in one molecule

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