Atoms and Isotopes

The interactions within the nucleus of an atom that hold the nucleus together is called

The smallest unit of matter that has all the properties of an element is a(n):

This particle determines what an element is.

Atomic mass is calculated by 

A(n) _________________ cannot chemically be broken down; all matter is composed of them.  

Atoms that have the same number of protons, but different numbers of neutrons are called....

The Periodic Table is organized by the number of________________ the element has. 

_________________________ break and change instantly to a different energy level. 

The _________________ particle of an atom carries a positive charge. 

Einstein's theory that E=mc² states there was a ___________ amount of energy within an atom. 

Which particles are found in the nucleus of an atom?

Atoms that have more electrons than protons are negative ___________ of the atom.