1. What are the parts of an atom?
Section 14-2

2. Structure of an atom Atom Particles of an atom Nucleus Center or core
Neutron
Neutral particles
Proton
Positive particles
Electron
Surrounds nucleus and are negatively charged
Particles of an atom
Atom

3. Thomson’s Model
First scientist (1897, England) to hypothesize that an atom was made up of a positively charged material with electrons.

4. Rutherford’s Model
(1908, New Zealand) Tested Thomson’s model and found that an atom is mostly empty space and that protons are contained in the nucleus.

5. Bohr’s Model
(1913, Denmark) Proposed that electrons are found in energy levels found at a certain distance from the nucleus. Current model which is followed.

6. H.W. p. 261 check/apply 1-8 Wkst. 14-2