PS1.A: Structure and Properties of Matter
Each atom has a charged substructure consisting of a nucleus, which is made of protons and neutrons, surrounded by electrons. (HS-PS1-1)
Objective(s): The students must be able to determine the number of protons, neutrons, and the mass number for any given element after an introduction of The Atomic Theory.
|The number on the top right||Atomic Number (protons)||7|
|The number on the bottom||Mass number (protons + neutrons)||14.01|