Bohr-Sommerfeld model
This article provides answers to the following questions, among others:
What main innovation did Sommerfeld introduce?How many sub shells does a main shell have?How many electrons...
Bohr’s atomic model
This article provides answers to the following questions, among others:
What is meant by a shell?What is a postulate?What distinguishes the ground state of an atom?How...
Rutherford’s atomic model
This article provides answers to the following questions, among others:
What is the setting of the gold foil experiment?What are α-particles?What conclusion can be drawn from the...
Periodic table
This article provides answers to the following questions, among others:
How are the elements arranged in the periodic table?What are the periods in the periodic table?Why...
Classification of matter
This article provides answers to the following questions, among others:
How can substances be classified?What is the difference between a pure substance and a mixture?What is...
Structure of matter
This article provides answers to the following questions, among others:
How is a substance constructed at the atomic level?What is a molecule?What is meant by a...
