Atomic Theory
Isotopes
Ions
Symbols and Names
Mixed Review
100
Three subatomic particles that make up an atom
What are electron, proton, neutron
100
Isotopes all have the same # of these
What are protons?
100
Atoms gain or lose ______________ to become more stable.
What are electrons?
100
This isotope symbol has 24 protons, 24 electrons, and 29 neutrons.
What is 53/24 Cr ?
100
This person was the first to put together an atomic theory.
Who is John Dalton?
200
Earth, wind, fire, and water were believed to be the basis of matter according to this man.
Who is Aristotle?
200
Mass numbers are made up of
What are protons and neutrons?
200
S2- has had this change to its number of electrons from its parent ion.
What is gained 2 electrons?
200
This isotope name is for the atom that has 35 protons and electrons and has 45 neutrons.
What is Bromine-80?
200
This person initially proposed the idea of atoms.
Who is Democritus?
300
Gold foil experiment conducted by Rutherford determined this about the structure of the atom.
What is a positive, dense nucleus in the center of atoms?
300
Give the identity and the number of neutrons from the following isotope symbol:
78/35 X
What is Br and 43?
300
The name of an atom with equal protons and electrons
What is Neutral?
300
This isotope symbol has a mass number of 184. It is neutral and has 74 electrons.
What is 184/74 W?
300
This is the identifying feature for a given element.
What are the number of protons?
400
JJ Thomson's model of the atom was named after this English dessert.
What is Plum Pudding?
400
How many neutrons are in Cadmium - 112
What is 64
400
The ion Calcium exists as...
Hint: Calcium will lose 2 electrons.
What is Ca2+?
400
23892U is the symbol...
Hint- need the name.
What is Uranium-238?
400
It's symbol is 138/56 Ba+2
What is... it has 56 protons, 82 neutrons, and 54 electrons?
500
This person determined that electrons exist in certain energy levels around the atom.
Who is Niels Bohr?
500
The element from calculating the Average Atomic Mass from:
20 amu, 90%
22 amu, 10%
What is Neon
500
Opposite charges do this
What is attract? or...
What is neutralize?
500
Each letter stands for... 
What is... A- mass number, Z- atomic number, X- chemical/element symbol?
500
Name five famous scientists discussed during this unit
Who are...