The Atom History and Vocabulary

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Can you name the Atomic History and Vocabulary Words??

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Term description
Smallest part of an element that can still retain the properties of that element.
These make up the atom, and they are protons, neutrons, and electrons.
This subatomic particle is in the nucleus of the atom, and has a positive charge.
This subatomic particle is in the nucleus of the atom, and has a neutral charge,
This subatomic particle circles the nucleus of an atom in a motion called an orbital. It has a negative charge. It also has no mass.
A particle that makes up a proton or neutron, it comes in 6 different flavors. (Sounds like ice cream!)
Number of protons an element has in its atomic state.
The sum of the number of protons and neutrons an element has in its atomic state.
A unifying scientific explanation supported by testing.
The center of an atom, made of protons and neutrons
Atoms with the same number of protons but different numbers of neutrons.
Representation of an object or system.
Region around an atom's nucleus in which electrons are likely to be found.
An SI unit used to express the mass of atomic particles
A word meaning 'smaller than an atom'
A substance formed by 2 elements.
Term description
An early 19th century chemis who helped to advance the belief in the existence of atoms.
In 1809, he reported that the hydrogen reacting with oxygen to form water occupied 2× as much volume as the oxygen.
Furthered the understanding of the correct chemical formulas and atomic masses.
Articulated the Law of Definite Proportions in 1799.
Discovered the nucleus of the atom in 1911.
Greek philosopher and scientist who argued that all matter was consisted of four elements: Air, Earth, Fire, and Water.
Greek who first came up with the idea of 'atomos', which means 'indivisible', and he suggested that atomos were specific to the material they made up.
Greek philosopher who accepted the theory of Empedocles, and added his own idea that the 4 elements could be changed to one another, he set back science almost 2000 years.
Italian mathematician who showed that air had weight, and invented the barometer.
Swiss mathematician who developed a theory that air and other gases consist of tiny particles that are too small to be seen.
English scientist who experimented with mercury calx in 1773, and discovered oxygen.
Frenchman who named oxygen.
Proposed a new definition of an element in around 1660.
Discovered, in 1886, that atoms have positive charges.
Discovered the neutron of the atom in 1932.
Danish physicist that proposed that electrons do not move freely, rather they move in precise steps now known as energy levels.

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