Show:
What's your story?
Pieces of Me
Isotopes and Ions
The P.T.
What am I?
100
Who first believed in the atom?
Democritus
100
What are the subatomic particles?
Protons, Neutrons, and Electrons
100
My number of protons is the same while my number of neutrons changes. I am an...
Isotope
100
Also known as rows...
Periods
100
Dull and brittle...
Nonmetal
200
I made the theory on atoms.
John Dalton
200
What identifies the element and the #of protons?
Atomic Number
200
Why is mass number a decimal?
It is a weighted average of all isotopes of an atom.
200
These go up and down.
Groups
200
Great conductor or heat and energy...
Metal
300
Who found the nucleus?
Ernest Rutherford
300
The sum of the protons and neutrons.
Mass Number
300
What charge does an atom carry if it gains more electrons?
Negative
300
Model of an atom in which each dot represents the valence electrons...
Electron Dot Diagrams
300
You can find me on the "stair step"
Metalloid
400
This person established the energy levels.
Neil Bohr
400
Where do you find your number of electrons?
The number of protons which is your atomic number
400
Isotope or different element? Element E- 12 protons, 18 neutrons Element D- 12 electrons, 14 neutrons
Isotope
400
What is the number of electrons an atom will gain or lose called?
Oxidation #
400
What is the most reactive metal?
Francium
500
What is the current model of the atom?
Electron Cloud Model
500
How do you find the number of neutrons?
Mass number subtract the atomic number
500
What is the correct way to write an isotope?
Element name/symbol, dash, mass #
500
Focuses on electrons and places them into energy levels.
Bohr's Model
500
I am the most reactive nonmetal...
Flourine