Check all the characteristics below that describe elements. one type of atom a pure substance more than one type of atom chemically combined elements

The characteristics that describe elements are:

A chemical element is called a substance that is made up of atoms of the same type whose nuclei show the same number of protons.

Therefore, we can conclude that elements are atoms that have the same number of protons in their nucleus.

Learn more about characteristics of an element here: link

The correct options are:

Explanation:

An element can be described as a substance having the same number of protons in its nucleus. It cannot be broken down further in a chemical reaction. It is made up of one type of atom and is a pure substance. For example, the atomic number of oxygen is 8. Hence,  the element, oxygen, has   8 protons.

In total, there have been 118 elements that have been discovered and places in the periodic table.

i believe the answer is c

substitution is the answer in this case