Question

8 what defines an element? a a substance that can be broken down into simpler parts b a mixture of different types of atoms c a combination of solids and liquids d a substance that cannot be broken down into simpler substances

Explanation:

An element is a pure substance. It consists of only one type of atom. By definition, it cannot be broken down into simpler substances through chemical means.

• Option A is incorrect because elements cannot be broken down into simpler parts (substances) chemically.
• Option B is wrong as an element has only one type of atom, not a mixture of different types.
• Option C is incorrect as it describes a physical combination (solids and liquids) which is not related to the definition of an element.
• Option D aligns with the definition of an element.

Answer:

D. A substance that cannot be broken down into simpler substances