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16 Cards in this Set
- Front
- Back
arrangement of the modern periodic table
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by mass and atomic number
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intensive properties
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dont depend on quantity of substance
density, temperature |
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metallic elements
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luster, high heat conductivity,
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atoms
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building blocks of matter
make elements all atoms of a given element are the same atoms of an element arent changed into different types of atoms by a chemical reaction compounds are formed when atoms of 1+ elements are combined |
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isotopes
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different number of neutrons
single molecule of an isotope is a nucleid |
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cathode rays and the cathode ray tube
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jj thompson
mass to charge ratio shows that atoms have a negative charge |
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metalloids
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share properties of both, lie on either side of step
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alpha particles
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positive
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rutherfords model of the atom
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PLUM PUDDING!
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beta particles
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negative
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names of groups on periodic table
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alkali, alkali earth metals, chalcogens, halogens (nonmetals-most reactive) noble gas, coinage metals
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hydrogen oxygen ratio by mass
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1.01:16
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nonmetals
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separated by diagonal step line
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extensive properties
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mass or volume
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gold foil experiment
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atoms shot into gold foil,
showed positively charged nucleus |
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gamma particles
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neutral
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