Question

5.Which of the following describes an element?

Answer 1

Answer:

D . it is composed of two or more types of atoms

Explanation:

The answer is D

Answer 2

An Element is a substance composed of atoms that have the same atomic number.

Explanation:

• Element is the simplest form of matter that is, it is the fundamental or basic material of which all matter is composed of. For example: Carbon $(C)$, Oxygen $(O)$, Hydrogen $(H)$ etc.

• It cannot be broken down into simpler substances by chemical means. For Example: - Hydrogen is an element which cannot be split into two or more simpler substances.
• An element is an example of pure substance i.e., It has constant composition and properties throughout.