Question 8 of 15beginner💡 UnderstandShort Answer2 marks

Is it possible for a substance to be classified as both an element and a compound? Explain why or why not.

Correct Answer

No, a substance cannot be classified as both an element and a compound simultaneously. Elements and compounds are mutually exclusive categories.

An element is the simplest form of matter that cannot be broken down into simpler substances by any chemical means. Elements are the building blocks of all matter and are made up of identical atoms.

A compound, on the other hand, is formed when two or more different elements combine chemically in a fixed ratio. A compound can be broken down into its constituent elements through chemical processes.

Since a substance either consists of one type of atom (element) or multiple types of atoms chemically combined (compound), it cannot belong to both categories at the same time.

Exercise: Keep the curiosity alive | Q: 8 | (Page Page 17)
For More Understanding

Explanation

The chapter clearly distinguishes between elements and compounds. Elements are defined as 'substances that cannot be further broken down into simpler substances. They are the building blocks of all matter.' Compounds are 'formed when different elements combine in fixed ratios to form something entirely new.' These definitions are mutually exclusive - a substance is either one or the other, never both.

Solution Steps

  1. Elements and compounds are mutually exclusive categories

  2. An element is the simplest form of matter that cannot be broken down further by chemical means

  3. Elements are made up of identical atoms

  4. A compound is formed when two or more different elements combine chemically in a fixed ratio

  5. Compounds can be broken down into constituent elements through chemical processes

  6. A substance cannot be both an element and a compound at the same time

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