Atomic Structure
The Element Square
Building the Models
Subatomic Particles
100
What is the center of the atoms called?
Nucleus
100
What is the atomic number?
8
100
Which two subatomic particles will always have the same number in a neutral atom?
Protons and electrons
100
What charge do protons have?
Positive
200
What two particles exist in the nucleus of the atom?
Protons and neutrons
200
What is the atomic mass/weight?
15.9994
200
How do you calculate how many neutrons are in the atom?
Round the atomic mass/weight to the closest whole number, and then subtract the atomic number
200
What charge do neutrons have?
Neutral or no charge
300
Where do the electrons live in the atom?
In the shells or orbitals
300
What is the element symbol?
O
300
Where do you put the first two electrons on the model?
North and South
300
What charge do electrons have?
Negative
400
How many electrons can fit on the innermost shell?
2
400
What is the element name?
Oxygen
400
In what directions do you put the rest of the electrons?
N,S,E,W
400
The atomic mass/weight is made up of what two subatomic particles?
Protons and neutrons
500
How many electrons can fit on the second shell?
8
500
What whole number would we round the atomic mass/weight to?
16
500
Bonus Worth 1,000: What are the models called?
Bohr Models
500
If an atom has an almost full outer shell/an almost empty outer shell, will it be more or less reactive?
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