atomic
what does the atomic number represent? atomic mass?
The atomic number represents the number of protons (and subsequently the electrons within an atom)
The atomic mass represents the mass of protons and neutrons within an atom
Where are valence electrons
They are the rows across the PTE
Whats the skeletons name
Jerry
What do the dots represent?
valence electrons
What has to be equal in the atom?
Electrons and protons have to be equal in the atom so that the charge is neutral!!
Which is the smallest subatomic particle?
electron
If an element takes in an electron, what would the charge be and what is the ion called?
it would be negative, anions
How many dots would Iodine (I) get?
7, since it is in the seventh valence electron level
What are the max amount of electrons in each energy level?
1:2
2 &3 :8
4 &5 : 18
6 & 7: 32
what are isotopes?
Atoms with the same atomic number but different atomic mass
What are characteristics of nonmetals? Metals?
Nonmetals:
Poor conductors of electricity 2.Brittle (break easily. 3.Dull appearance (not shiny)
Metals:
Conduct electricity 2. Malleable (bend easily. 3.Luster (shiny appearance)
What elements are the givers? Takers?
Metals are the givers, non metals are the takers
What is unique about every element?
The atomic Number
Describe Covalent bonds
Chemical bonds in which the atoms share the electrons. Formed between two nonmetals.
Will you get any points for late work this unit?
NO
Draw the ionic bond of Na3N
Answer on board
What is the outermost energy level? How do we find it?
Valence Electrons, we find them by using the periodic table and going down the families but skipping the transition metals.
How do you figure out the oxidation level?
You take the amount electrons that it would give or take to reach the octet level.
How do you write the formula for an element?
Na +O2 ->
Take the oxidation numbers and criss cross them to the other element. The positive element is always written first, and the charges are dropped.
Na2O
Draw the covalent bond of H20
On the board