Valence Electrons Flashcards
charge of a proton
positive
charge of a electron
negaitve
opposite charges
attract
like charges
repel
In order for a compound to be polar, it must have these features
Uneven/assemtrical and a partial charge
How do we know things are charged
How they act next to other things that are charged
What does a chemical formula show
The ratio of chemicals in a compound
Why do elements form compounds
They are attracted to each other’s electrons
A stable element has how many stable electrons
8
What 2 elements need only 2 valence electrons
H and He
To become stable, elements form
Compounds/bonds
How do elements form bonds
Stealing, losing, or sharing electrons
A pure substance made up of only one atom
Element
Two or more elements combined
Compound
Equal number of protons in an atom
Atomic number
of protons is equal to the
of electrons
Energy level 1 can hold how many electrons
2
Energy level 3 can hold how many ve
18
Where are valence electrons located
The outer most energy level
How much of the earth is water
75%
