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What did Bohr contribute to the atomic model? -Electrons orbit around the protons and neutrons -He conducted experiments
What did Dalton contribute to the atomic model? -He came up with four therories -Studied by using gases -Combined different elements -Behaved Differently
What did Democritus contribute to the atomic model? -Atom containing both a + and - charge (charge in atoms) -Tested w/ cathode ray tubes
What did Rutherford contribute to the atomic model? -The nucleus has protons and neutrons -Gold foil experiment
What is the nucleus? The center control system of the atom
What is the electron cloud? The area around the nucleus were the electrons are found
What is an ion? -A particle that is electrically charged (pos. or neg.) -Electrons do not = protons (net charge)
What is an isotope? One of two atoms with the same atomic number with different numbers of neutrons *(different masses)*
What is a neutral charged atom? protons and electrons are equal
What are the 4 fundamental forces? (Weakest to Strongest) 1.Gravitational Force 2.Weak Force 3.Electromagnetic Force 4.Strong Force
Gravitational Force -Particles have mass
Weak Force -When atoms decay (lose particles)
Electromagnetic Force (EM) pro(+) electrons(-)
Strong Force -mixes protons and neutrons together -(rubber band)
Created by: Shannyy