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34 Cards in this Set
- Front
- Back
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Artifical Transmulations |
nucleus with an element into another by bombarding the atomic nucleus with particles |
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Particle acceleration |
electric magnetic field |
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Radioactive |
decay or breakdown of the atomic nucleus |
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Proton:Neutron |
Ratio which determines stability of the nucleus |
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Transmutation |
One element that has gained or lost electrons |
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Ion |
an element that has gained or lost electrons |
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Selected oxidation states |
Indicate the type ion an element can become |
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valence electrons |
Located in the outermost energy level |
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Nucleur change |
proton number |
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Atomic charge |
Protons + Electrons are =, atomic charge=0 |
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Protons + Neutrons |
Found inside the nucleus |
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Atomic mass |
Ontains a decimal because it is the average of all naturally occurring isotopes |
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atomic number |
Identifies the element, # of protons |
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Mass number |
most abundant, rounded. Protons and neutrons |
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Neutral atom |
when protons and electrons are = |
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Isotopes |
When the same atomic # , same element, same number of protons, but a different mass#/Neutrons |
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AMU |
Atomic Mass Unit |
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Electrons |
exist in probability "clouds" called orbitals |
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J.J Thomas |
plum pudding, electrons |
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Rutherford |
gold foil experiment, atoms empty, dense nucleus |
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Bohr |
Discovery of the neutrons |
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protons and neutrons |
Found in the nucleus |
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Physical means |
Filtering via magnets,hands or sorting |
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Filter paper |
Removes solids |
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Distillation |
according to different boilling points |
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Pure substances |
all samples have the same properties or characteristics (boiling point) |
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Elements |
Simplest substances which have the same atoms, and can not be broken down chemically |
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Binary compound |
2 elements only |
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Mixture |
two or more elements that have been physically combined |
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Homogenous mixture |
The same through out,uniform |
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Heterogenous mixture |
mixture to uniform' mixture |
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Matter |
Anything that has mass and volume |
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Chemical properties |
Rusty, flammable, bubbles |
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Physical properties |
color, odor, density
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