the Elements and the Periodic
|Caution: You are about to enter a no-fact zone. Concepts only please!|
Atom--the fundamental unit of an element
We have learned to manipulate these atoms in order to produce a vast array of useful modern materials, including pharmaceuticals that help prolong our lives.
of these elements are found in
The rest were created in the scientist's lab!
|So most atoms are ancient. They have existed through imponderable ages, recycling through the universe in innumerable forms, both nonliving and living. In this sense, you don't "own" the atoms that make up your body--you are simply their present caretaker. There will be many caretakers to follow. Hewitt|
The most fundamental unit of Matter,
or are they?
with the same number of protons
but different numbers of neutrons.