Atomic Structure Flashcards
What is all the matter made up of?
made of small particles called atoms
Describe an atoms volume
Mast of the volume of an atom is made up of empty space
This space is the area where electrons move around the nucleus
This space s known as the electron cloud
Describe valence electrons
valence electrons are the number of electrons in the outer-most energy level
these give the atom its ability to chemically bond
valence electrons help determine an element’s chemical properties
What are Protons?
Protons are positive charged atoms, located in the nucleus and weighs about 1 AMU
What are Neutrons?
Neutrons are neutral charged atoms, located in the nucleus and weigh about 1 AMU
What is an Electron?
Electron is negative charaged, located in the electron cloud or outside of the nucleus and weighs less than 1 amu.
What atoms are located in the Nucleus?
Protons and Neutrons
How many levels are there in the outside of the Electron Cloud?
4
How many electrons are in the first level to the nucleus?
2
How many Electrons are in the second level to the nucleus?
8
How many Electrons are located in the 3rd level to the nucleus?
18
How many Electrons are located in the 4th level to the Nucleus?
32
What is Atomic Number?
The number of Protons and Electrons
How to find Netrons?
Atomic Mass - Atomic Number
How to find Atomic Mass?
Protons + Neutrons
