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ATOMS - Coggle Diagram
ATOMS
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Early Ideas about Atoms
Aristotle
He believed all substances were made of small amounts of these four elements of matter the Earth, Fire, Water, and Air.
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Plato
Plato introduced the atomic theory in which ideal geometric forms serve as atoms, according to which atoms broke down mathematically into triangles
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Democritus
He proposed that matter, when small enough, reaches a point where it can no longer be divided and becomes atoms, meaning "indivisible." Matter is composed of indivisible building blocks.
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Robert Boyle
He performed experiments that articulated Boyle’s Law, which states that the volume of gas decreases as the pressure on it increases and vice versa. He also explained that certain substances decompose into other substances
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Antoine Lavoisier
Lavoisier formulated Law of conservation mass. He was able to accurately measure all substances involved in the burning process proving that when substances burn, there is no
net gain nor loss of weight.
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Joseph Proust
He formulated the Law of definite proportions. He discovered that basic copper carbonate, regardless if prepared in the laboratory or obtained from natural resources was always composed of copper, carbon, minute traces of hydrogen and oxygen.
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Jabir Ibn Hayyan
Jabir's writings were the first to mention such important compounds. He also believed that metals grew in the earth
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Paracelsus
He believed that the body's organs worked as a purifier that is to separate impure substances in the body from pure ones. He also believed that controlling the "tria prima" is necessary for the maintenance of health.
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Atomic Structure
Subatomic Particles
Neutrons
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Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
Electrons
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Electrons are the negatively charged particles of atom. Together, all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus.
Protons
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Positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element.
Cations
It is an ion that has lost one or more electrons, gaining a positive charge.
Anions
It is an ion that has gained one or more electrons, acquiring a negative charge.
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