The Basics of Elements

The video tutorial explains that elements like gold, helium, and aluminum are pure substances made of one type of atom. It describes how atoms of different elements have unique structures and cannot be broken down into simpler substances. The tutorial also highlights that there are over 100 known elements, some occurring naturally and others synthesized in labs. It emphasizes the immutable nature of elements, using iron as an example to illustrate that even when broken into smaller pieces, it remains the same element.

How do different elements differ from one another?

What is the significance of the atomic structure of elements?