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Terms in this set (18)
Greek Philosopher who said the atom was a solid sphere with nothing new inside
Agreed with Democritus two thousand years later ... The atom was a solid sphere with nothing new inside
Believed the atom was a solid sphere with charged particles stuffed in it like blueberries in a muffin
Believed the atom was mostly empty space ... A very small positively charged nucleus exists in a big electron cloud. The electrons are so small they leave most of the electron cloud empty.
Believed that the small positively charged nucleus was orbited by electrons like planets around the sun. It was a 2 dimensional model.
Order of Atomic Philosophers
Democritus, Aristotle, Dalton, Thompson, Rutherford, Bohr, Modern Model(Heisenberg, Schrodinger, and others)
Small, dense center of an atom
Where is most of the mass in the atom?
Charge of a Proton
Charge of a Neutron
Charge of an Electron
Two sub-atomic particles found in the nucleus
Proton and Neutron
Sub-atomic particle orbiting the nucleus
Greek philosopher who described the elements as Earth, air, fire and water
Schrodinger and Heisenberg
Electrons are found in electron clouds, not paths
Discovered the neutron
Dalton's Atomic Theory
1) elements are composed of atoms. 2) atoms can not be created, destroyed or divided 3) atoms of same element are identical, but differ from other elements. 4) atoms of one element can combine with atoms of other elements to form compounds
Placement of the sub-atomic particles in an atom.
Protons (+)- in nucleus
Neutrons (0) - In the nucleus
Electrons (-) - orbiting the nucleus
OTHER SETS BY THIS CREATOR
Thermal Energy & Heat Transfer
Unit 2 - Elements to Know
Unit 1: Characteristics of Matter