Key ideas- unit 1 atomic structure and the periodic table (1).docx

4.1.1 -Atomic structure and the periodic table
Topic Key questions
Atoms, elements, and
compounds
What are the names of the first twenty elements?
Define what is an element and a compound.
Define a mixture. Describe, explain, and give examples of the different
processes of separation. Development of the
model of the atom
Describe why the new evidence from the scattering experiment led to a
change in the atomic model.
Describe the difference between the plum pudding model of the atom and
the nuclear model of the atom.