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NAME THE EXPERIMEMT
What experiment was performed when…
1. the nucleus was discovered _______________________
2. the electron was discovered ___________________
3. when the proton was discovered _______________________
4. mass and charge of the electron was discovered _______________________
5. it was discovered that the atom is mostly empty space _______________________
6. it was discovered that nuclei of atoms of the same element have the same number of protons. ____________
WHO WAS IT???
1. Who released a paper in which he presented the Law of Conservation of Mass? _______________________
2. Who determined the mass and charge of an electron? _______________________
3. Who discovered the nucleus? _______________________
4. Who did their research with the Cathode Ray Tube (CRT ?_________________ & __________________
5. Who discovered the electron? _______________________
6. Who discovered the atom is mostly empty space? _______________________
7. Who discovered that elements of the same element have the same number of protons in the nucleus? ______
8. Who did his research with the gold foil experiment?_________________________________
9. Who released a paper in which he presented the Law of Constant Composition? ______________________
10. Who discovered the proton? _______________________
11. Who determined the mass and charge of an electron? ______________________
12. Who discovered the neutron? ______________________
13. Who did his research with the oil drop experiment?_________________________________
14. Who was the first to suggest that all matter is made of tiny, little particles he called “atomos” ___________
15. Who did his research using X-Rays? _______________________________
Models
Use these models to help you make a sketch on the table below.
Names of Models
Scientists
 Planetary Model
 Quantum Mechanical Model
 Plum Pudding Model
 Nuclear Model
 Solid sphere
 Rutherford
 Thomson
 Bohr
 Dalton
 Schrödinger
Descriptions
 electrons rotating around the nucleus in well defined patterns with fixed amounts of energy, much like the planets rotate around the
Sun
 The atom is composed of two main areas: 1. the nucleus, and 2. the electron cloud, the region around the nucleus where the
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electrons. The electrons do not move in well defined, fixed paths. The location of the electrons discussed as the probability of
locating electrons in certain areas.
All of the positive charges are located in a central region, called the nucleus, with the electrons occupying an area of mostly empty
space around the nucleus
positive charged mass with negative charged particles mixed through out it.
solid, dense sphere of matter with no divisible parts; much like a billiard ball
Model
Name of the
scientist
Dalton
Thomson
Rutherford
Bohr
Schrodinger
Make a Sketch
of the
Atomic Models
Name of
Model
Experiment the Scientist
performed
Description of Model