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Discovered by Joseph Priestley in the 1770's. Oxgen is an element made by gas and it makes up about 1/5th of the earths oxygen
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Dalton said he discovered, "The ultimate weight of ultimate particles". When it became public he annouced it as atomic weight. Atomic theory was the new syste, that defined the relationship between atoms and molecules.
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Avagaro discovered that gases are not made by one atom but by a variety of atoms, called molecules
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August Kekule discovered how the molecules are able to bond and create a chemical structure.
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Humphry Davy melted pot ash, put some wires,and pure pottasium began to emerge, reacting to chemicals.
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The discovery was that the building block of all matter organic and inorganic are the same
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Each element has a different color when put on heat. This helps scientist to identify the elements.
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Arrangement of the chemical element, order by their atomic number, electron configurations, and recurring chemical properties.
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Antonie Henri Becquerel found that Uranium was the source of radioactivity. Radioactive material goes to a natural process of decay, making unstable and highly charge particles that can go through solid objects.
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Particles that make up an atom and carry a negative charge.
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The bond is form when the electrons give up or accept their electron from their outer shell.
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Plactics are polomers which are long chain of molecules.
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All carbon molecules that is good with the atoms they have. It's also the strongest fiber in the world. It's stiffer than steal and diamond.