To classify example sentences

For proper understanding, it would be useful, to classify them into certain common categories.The next reported attempt to classify elements was made by a French geologist, A.Geologists use these properties to classify the minerals.He fully recognized the significance of periodicity and used broader range of physical and chemical properties to classify the elements.That is why it is preferable to classify materials as good conductors and poor conductors instead of classifying as conductors and insulators.