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Scientist
Isotopes
Calculations!
Periodic Table
100

This scientist coined the term "Atomos"

Who is Democritus?

100
Number of protons in oxygen.
What is 8?
100

What fraction of a substance remains after 2 half lives?

What is 1/4?

100

This element has an atomic number of 46

What is Paladium?

200

J.J. Thompson is responsible for the discovery of this

What is the electron?

200
Number of neutrons in phosphorus- 32.
What is 17?
200
69.09% of copper atoms have a mass of 62.93 amu. 30.91 % of copper atoms have a mass of 64.93 amu. This is the average atomic mass.
What is 63.55 amu?
200

This is the lightest alkaline earth metal

What is Beryllium?

300

This is the scientist associated with the solid sphere model

Who is Dalton?

300
Number of protons, neutrons and electrons in carbon 13.
What is 6 protons, 6 electrons and 7 neutrons?
300

Titanium has five common isotopes: 46Ti (8.0%), 47Ti (7.8%), 48Ti (73.4%),49Ti (5.5%), 50Ti (5.3%). This is the average atomic mass of titanium

What is 48 amu?

300

This halogen has three energy levels.

What is Chlorine?

400

This is the difference between Rutherford's and Bohr's models of the atom

What is Bohr's model contains energy levels for electrons while Rutherford's does not

400
A bromine atom has 35 protons and 36 electrons. This is the charge.
What is -1?
400

The half life of Radium-228 is 5.75 years. If the radium girls used 25 g of paint on a clock 103.5 years ago, how much Radium remains today?

What is 9.5 x 10-5

400

This element has 5 valence electrons and is in period 4

What is Arsenic?

500

Heisenberg was known for what principle? Explain what that means!

Uncertainty principle: you cannot know the position and speed of an electron at the same time

500
Number of protons, neutrons and electrons in uranium - 238.
What is 92 protons, 92 electrons and 146 neutrons?
500

The half life of sertraline (a medication) in the human body is 24 hours. If someone took 150 mg 3 days ago, how much is still in their system?

What is 18.75 mg?

500

This is why the elements in group 1 all react violently with water

What is one valence electron?