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.

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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.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

b a mature ovary of a plant.