Respuesta :
Compounds are made of the various elemental atoms joined together. Water and salt are compounds that can be present in their pure form. Thus, option A is false.
What are compounds and pure substances?
A compound is a substance formed by the bond between the atoms of the elements that shares, transfers, donates, or gains electrons to join and interlink chemically.
The pure substance is characterized by the presence of only a single type atom of the element. They have invariability and can exist in various phases with constant composition.
Water and salt are compounds made of two or more atoms of different elements that have specific physical properties and distinct chemical properties.
Therefore, option A. the compounds cannot be pure substances is false.
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