Chemistry Stem Lesson Pla
Teacher: Hayriye Aydın
THOMSON ATOM MODEL
Thomson discovered the electron by
charge to the mass of each atom thro
has proven that the atom giving the e
positive) charge, it has defined that t
distributed homogeneously within th
the grape cake model. With Rutherfo
the proton and electron are distribut
1. Consists of atoms plus charged ma
2. Electrons are embedded in this sur
3. The masses of the electrons are ve
entire mass of the atom.
4. The atom has the shape of a spher
RUTHERFORD ATOM MODEL
There is a part in the atom called the
an atomic hollow structure.
BOHR ATOM MODEL
There are certain energy levels arou
closest energy level to the core is the
away from the core. The electron wa
lowest energy level. When this electr
energy level. However, it is unstable
takes, it comes to the first energy lev
radiates at different wavelengths. Bo
which elements with 1 electron can r