Midterm – Chemistry – Flashcards
Unlock all answers in this set
Unlock answers% Compostition |
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% concentration by mass |
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Accuracy |
the average of data |
Acids |
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Activity Series |
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Allotropes |
Alloy |
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Anode |
Atom Interaction |
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Bases |
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Boiling Point |
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Cathode |
Chemical Change |
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Coatings |
Colloids |
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Covalent Bonds |
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Demetri Mendeleev |
father of the periodic table |
Doping |
adding impurities to pure forms of semiconductors in order to increase their conductive properties |
Earth's Compostition |
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Electrode |
a conductor through which electricity enters/leaves and object, substance, or region |
Groups/Families |
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How do we know if it is profitable to mine a given site? |
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Kelvin |
degrees;celsius;+ 273.15 |
Life Cycle of a Material |
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Matter |
anything that has volume and mass |
Mineral |
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Mixtures |
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Modifying Properties |
Can be modified by synthesizing material with other elements or compounds at molecular level |
Molar Mass |
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Mole |
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New Periodic Table |
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Nitrogen;Family |
bonds with other elements the most |
O in Oxide |
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Ore |
naturally;occurring;rock or mineral that can be mined and from which it is profitable to extract metal or other material |
Original Periodic Table |
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Oxidation Reduction Reactions (Redox Rxns) |
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Physical Changes |
any property or change that does not change the chemical makeup of the matter |
Pigments |
Plating |
Powder Coating |
Precision; |
reproducible;results |
Properties of Metalloids |
mix between properties of metals and nonmetals |
Properties of Metals |
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Properties of nonmetals |
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Pure Substances |
; ; |
Reactivity trend on the Periodic Table |
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Reading a Scale |
remember, if;meniscus;is on a line, put a 0 at the end; |
Refine |
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Renewable Resources |
can eventually be replenished through natural or artificial process, ex: food or lumber |
Rows/Periods |
horizontal rows on the periodic table |
Rules of Balancing Equations |
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Semiconductors |
Significant Digits |
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Solvent |
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Solvent |
Supply and Demand |
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Suspension |
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Thin Films |
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Tyndall Effect |
lights scattered by solids, shows colloids |
Waste Management |
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Ways to separate mixtures |
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Where is the Earth's Water? |
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Why were gold, silver, and copper the first metals to be discovered? |
they are chemically inert, and found in their free state in nature |
charge |
protons - electrons |
chemical symbols |
represent identity of an atom |
covalent compounds |
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density |
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dimensional analysis |
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electrons |
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equations |
show chem.;interactions;of matter |
formulas |
identify the type ; # of atoms found in molecule |
half reactions |
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heavy metal ions |
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ion |
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ionic compound |
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isotope |
2 atoms with same # of protons but different # of neutrons |
law |
states summary of observed behavior, can't be broken |
law of conservation of matter |
matter can't be created or destroyed |
mass number |
protons + neutrons |
mega |
106 |
micro |
10-6 |
mixtures |
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nano |
10-9 |
neutrons |
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nonrenewable resources |
cannot be replenished, ex:petroleum |
protons |
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pure substances |
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resin |
solubility |
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solution |
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subscripts |
identifies # of atoms present |
theory |
an explanation of the behavior, can be wrong |