Electrons
The name or names for the layers of electrons.
What are shells or orbital levels?
The three subatomic particles that are in an atom.
What are protons, neutrons, and electrons?
The atomic number tells us how many ______ there are in an element.
What are protons?
This is the reason why scientists use the period table.
What is as a "cheat sheet" to easily tell how an element is structured and it behaves?
The number of electrons that a stable Magnesium atom has.
What is 12?
This element has 15 protons.
What is Phosphorus?
This atom has an atomic weight of 4.
What is helium?
The name for a row on the periodic table.
What is a period?
_________ _________ are the subatomic particles that orbit the nucleus on the outermost shell.
What are valence electrons?
_______ ______ shows the number of protons and neutrons added together.
What is the atomic weight?
Mendeleev organized the elements into a version of the periodic table by _________ _________.
What is atomic weight?
This is written below the chemical symbol on the periodic table.
The number of valence electrons that Sodium has.
What is 1?
The element Iron has the chemical symbol Fe. Elements normally get their chemical symbols from _______.
What is their Latin names?
What is Argon?
The way that periods on a periodic table are organized.
What is by the number of shells (aka. orbital levels)?
The inner most shell of an atom can only hold ____ electrons.
What is 2?
This element has 2 shells and 1 valence electron.
What is Lithium?
A version of an element that has the same number of protons, but a different number of electrons.
What is an isotope?
The way the columns of the periodic table are organized.
What is by the number of valence electrons?