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21 Cards in this Set
- Front
- Back
Bronze |
example of a mixture |
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group 18 or 8a |
noble gases insert or unreactive nonmetals 8 valence electrons
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number of dots on an electron dot diagram = |
number of valence electrons |
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number of valence electrons = |
group number where the element is found |
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mass number = |
protons + neutrons |
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positive charge is found in the nucleus mass=1 |
proton |
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negative charge found outside the nucleus no mass |
electron |
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no charge found inside nucleus mass=1 |
neutron |
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elements in the same group or family |
have the same number of valence electrons have the same oxidation number |
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most reactive metals |
alkali metals (group 1 or 1a) |
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most reactive nonmetals |
halogens (group 17 or 7a) |
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metals solids touching |
conduction |
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liquids or gases |
convection |
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occurs on the sun or stars |
radiation |
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examples of colloids |
Milk and fog |
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what metals do in a reaction |
lose electrons and become positive |
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what nonmetals do in a reasction |
gain electrons and become negative |
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group 1a |
alkali metals most reactive metals 1 VE |
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group 2a |
alkaline earth metals 2VE |
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group 7a |
halogens most reactive nonmetals 7VE |
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group 8a |
noble gases unreactive 8VE |