Atomic Theory Timeline
Bohr Model
Periodic Table
Average Atomic Mass
Atomic Calculations
100

Who created the Bohr Model?

Who is Niels Bohr?

100

What goes in the nucleus?

What is protons and neutrons?

100

What is not found on the periodic table?

What is the mass number?

100

Cl-35 75.77%

Cl-37 24.23%

What is 35.46 amu?

100

What is the mass number of this element with the information provided? 

Element: Mg

Atomic number: 24

Mass number: ?

Number of protons: 12

Number of neutrons:12

Number of electrons: 12

What is 24?

200

Who created the nuclear model using the gold foil experiment?

Who is Ernest Rutherford?

200

What is the space called where the electrons are?

What is the electron cloud?

200

What is the key word for atoms of the same element with different numbers of neutrons?

What is an isotope?

200

Mg-24 78.99%

Mg-25 10%

Mg-26 11.01%

What is 24.30 amu?

200

What is the number of neutrons in this element with the information provided? 

Element: U

Atomic number: 92

Mass number: 238

Number of protons: 92

Number of neutrons:?

Number of electrons: 92

What is 146?

300

What is the Plum Pudding model mostly referred to?

What is a chocolate chip cookie?

300

How do you know what element the Bohr model is showing?

What is the number of protons?

300

What does the atomic number tell you?

What is the number of protons?

300

10B 19.9%

11B 80.1%

What is 10.81%?

300

What is the nuclear notation of this atom with the information provided? 

Element: ?

Atomic number: ?

Mass number: 24

Number of protons: 11

Number of neutrons: ?

Number of electrons: 11

What is 24Na?

Atomic number: 11

Number of neutrons: 13

400
Which model is best known for the nucleus and its electron cloud?

What is the electron cloud model?

400

How do you know how many valence electrons there are?

What is the amount of electrons in the outermost shell?

400

What are the two forms of isotope notation?

What is hyphen form and nuclear form?

400

6Li 7.59%

7Li 92.47&

What is 6.94 amu?

400

What is the nuclear notation of this ion with the information provided? 

Element: ?

Atomic number: 20

Mass number: 40

Number of protons: ?

Number of neutrons: ?

Number of electrons: 18

What is 40Na+2?

Number of protons: 20

Number of neutrons: 20

500

Who created the first ever model called the solid sphere model in 1803?

Who is John Dalton?
500

How many electrons go on the third orbital/energy level?

What is 8 electrons?

500

What is an ion?

What is a charged atom?

500

Ne-20 90.48%

Ne-21 0.27%

Ne-22 9.25%

What is 20.19 amu?

500

Find the missing information of this element with the information provided? 

Element: Oxygen-17

Atomic number: ?

Mass number: ?

Number of protons: ?

Number of neutrons: ?

Number of electrons: ?

What is....

Atomic number: 8

Mass number: 17

Number of protons: 8

Number of neutrons: 9

Number of electrons: 8

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