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| Greek philosopher , he developed atomic theory originated by his teacher , Leucippus , that explained the natural phenomena in terms of the arrangement and rearrangement of atoms moving in a void |
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| was an English chemist, meteorologist and physicist. He is best known for his pioneering work in the development of modern atomic theory, and his research into colour blindness |
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| developed the use of the cathode ray tube in the study of the atom |
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| Discovered electron by using the cathode ray to tell eletrical charges Plum Pudding Model. |
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| Scientist that discovered the existence of the neutron |
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| Scientist who established the Heisenberg uncertainty principle which states that it is fundamentally impossible to know the velocity and position of a particle at the same time |
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| Particles which are smaller than the atom- that the atom is split into, such as protons, neutrons, and electrons |
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| radiation that originates from the cathode(-) and travels to the anode(+) of a cathode ray tube. Used in television sets and produces the color you seeon the screens. |
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| The integer nearest to the atomic weight of an atom and equal to the numbers of nucleons (protons, neutrons, and electrons added together) in the nucleus of an atom |
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| Also known as r.a.m- Ratio of the average mass of atoms of an element to one-twelfth of the mass of an atom of Carbon-12. |
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| High energy particle created by radioactive emission. The symbol is a B. Created by splitting a nuetron into a proton and electron. Middle energy of the 3 particles released by radiation |
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| High-energy radiation. Has no mass. Symbol is Y. |
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| A device set up to create and maintain a nuclear reaction for the production of energy. |
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atomic mass unit
indicates mass at a molecular state. 1 amu is 1/12 of Carbon atom. |
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| PARTH DO NOT CUT AND PASTE.. It is a different form of the same element; it is an atom with a different number neutrons but same number of protons in relation to the atom's element's natural state. Ex: Carbon-1w and Carbon-14
C-12 is natural (element form), and C-14 is radioactive. The numbers represent the number of neutrons in that isotope. |
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| A helium nucleus emitted by some radio active substances, originally regarded as a ray |
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| French-polish scientist know for advances in radiology discovered radioactive particles. Discovered Radium and Polonium. |
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| Combining lighter atomic nuclei to form a heavier nucleus. Energy is released. |
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| the process in which energy is emitted as particles or waves. |
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| A nuclear reaction or radioactive decay process in which the nucleus of an atom splits into smaller parts releasing energy and producing free neutrons and photons |
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| british physicist who discovered the atomic nucleus anf proposed a nuclear model of the atom. |
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The theory that states that:
-matter is broken up into smaller units called atoms
-these atoms are indivisible
-all atoms of the size element will have the same size, mass, and other properties
-atoms of different elements are different
-in compounds the atoms are combined in whole-number ratios
-and that in a chemical reaction, atoms are combined, rearranged, or separated |
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| Discovered polonium and radium. Medical revolution |
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| Hungarian scientist that created the quantum mechanical model of the atom. This model displays the electrons in waves and displays the relative position of an electron around a nucleus based off of its energy level. |
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