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18 Cards in this Set
- Front
- Back
Atomos
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This was discovered by democratius. He stated that matter is made up of tiny atomos. This is the greek word used to describe the smallest particle that could not be broken down. It also means indivisible.
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Aristotle
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He believed that matter is a mix of earth,air,water and fire.
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Alchemists
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They thought metal could be changed into gold. Preformed many experiments. THey created the scientific method and many lab instruments.
They also discoverd other instruments for example plaster of paris. |
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Andreas Libau
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Published a book call Alchemia. It was about how to prepare chemicals
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Robert Boyle
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experimented with gases
was convinced that matter was made up of timny particlue that joined. tiny particles cominbed toghther to make differant substances. |
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Antoine Lavoisier
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Known as the fater of modern chemistry.
Studied chemical interactions developed a system for naming chemicals. He did this becuase it would be easier for researchers. |
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John Dalton
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suggested that matter is made up of atoms.
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Atomic Theory
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1. All matter is made up of tiny particles called atoms.
2. All atoms of the same elements are identical.(especially in mass and size) 3. Atomes of differnat elements differ in mass and size 4. Atoms combine in whole number rations to produce compounds. |
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Atom
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smallest portion of an element that retains its properties.
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Billard ball model
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Created by John Dalton. Basically makes the elements look like balls colliding.
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JJ Thomosn
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experimentation and observation revealed that atoms had negativce charges in them
Atoms contained electrons Atoms are positively charged spheres with electrons in. there are smaller particles than atoms. This also explains the Raisin Bun model |
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Hantaro Nagaoka
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investigations lead to modify the model.
Atoms had a positivley charged sphere being orbited by small electrons. Hence the mini solar system model. |
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Ernest Rutherford
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found that the atom was mainly empty space with a positively charged center called the Nucleus.
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Nucleus
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A very dense, positivley charged centre of the atom. Explains the planetary model
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Niels Bohr
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Worked with Rutherford. He suggested that electrons orbit a specific track. an orbital is what he called it. He created the Bull's eye target model. It shows how the electrons centre the middle nucleus
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Protons
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particles in the atoms nucleus atom that has a positive charge.
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Neutrons
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particles in the nucleus with zero charge
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Quatuam mechanics
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Basically the only thing added on is the electron cloud surronding the orbitals
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