Question

drag the right word to its definition
a pure chemical substance that cannot be physically split into a more simple substance. each is made of one type of atom. carbon, mercury and hydrogen are examples.

Explanation:

The description given matches the definition of an element. An element is a pure chemical substance made of one - type of atom and cannot be physically broken down into simpler substances. Carbon, mercury, and hydrogen are well - known elements. A proton is a sub - atomic particle and a nucleus is the central part of an atom.

Answer:

Element