Midterm – Chemistry Test Questions – Flashcards
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| density of water with units |
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| 1 g/mL |
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| closeness to true value |
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| accuracy |
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| reproducible measurements |
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| precision |
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| boiling in f |
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| 212 |
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| boiling in c |
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| 100 |
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| boiling in k |
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| 373.15 |
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| freezing in f |
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| 32 |
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| freezing in c |
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| 0 |
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| freezing in k |
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| 273.15 |
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| body temp in f |
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| 98.6 |
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| body temp in c |
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| 37 |
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| body temp in k |
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| 310 |
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| abs 0 in f |
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| -460 |
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| abs 0 in c |
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| -273.15 |
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| abs 0 in k |
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| abs 0 |
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| change in the form of a substance, not in chemical composition |
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| physical change |
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| changes a substance's composition, cannot changed back |
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| chemical change |
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| same throughout (ex: water) |
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| homogenous |
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| visibly distinguishable parts (ex: blood) |
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| heterogenous |
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| who derived the law of conservation of mass, father of modern chemistry, and wrote the first modern chem textbooks |
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| Lavoisier |
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| invented x rays |
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| Roentgen |
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| method for separating the components of a liquid mixture that depends on differences in the ease of vaporization of the components |
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| distillation |
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| exa E |
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| 10^18 |
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| peta P |
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| 10^15 |
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| tera T |
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| 10^12 |
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| giga G |
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| 10^9 |
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| mega M |
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| 10^6 |
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| kilo k |
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| 10^3 |
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| hecto h |
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| 10^2 |
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| deka da |
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| 10 |
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| deci d |
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| 10^-1 |
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| centi c |
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| 10^-2 |
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| milli m |
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| 10^-3 |
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| micro u |
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| 10^-6 |
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| nano n |
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| 10^-9 |
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| pico p |
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| 10^-12 |
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| femto f |
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| 10^-15 |
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| atto a |
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| 10^-18 |
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| substance that cannot be decomposed into simpler substances |
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| element |
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| substance with constant composition that can be broken down into elements by chemical processes |
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| compound |
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| 1mL= |
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| 1cm^3 |
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| ethylene gylcol |
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| antifreeze |
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| length, |
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| meter |
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| kg |
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| mass |
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| second |
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| time |
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| ampere |
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| electric current |
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| kelvin |
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| temp |
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| andela |
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| luminous intensity |
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| mol |
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| amount of a substance |
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| who performed the old drop experiment and calculated the mass of an electron to be 9.11x10^-31kg? |
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| Thomson |
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| who used the gold foil experiment to discover the positively charged nucleus of the atom |
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| Rutherford |
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| give and take of electrons |
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| ionic bond |
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| sharing of electrons |
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| covalent bond |
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| vertical column, same valence electrons |
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| group |
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| horizontal elements on pt |
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| period |
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| atoms of same element (same protons but diff numb of neutrons) |
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| isotope |
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| numb of protons in nucleus of atom |
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| atomic number |
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| numb of protons and neutrons in nucleus |
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| mass number |
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| properties that do depend on the amount of the substance present (ex: mass, weight, volume, length) |
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| extensive physical property |
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| properties that don't depend on the amount of substance present (ex: color, density, boiling point) |
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| intensive physical property |
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| helium-4 nucleus (4/2 He) |
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| alpha |
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| high speed electron (0/-1e-, B) |
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| beta |
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| high energy photon (excess energy) |
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| gamma |
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| antiparticle of the electron |
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| positron |
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| terms for each isotope of an atom |
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| nuclide |
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| protons and neutrons found in nucleus, code name |
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| nucleon |
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| negative ion (nonmetals) |
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| anion |
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| positive ion (metals) |
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| cation |
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| charge of electron w units |
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| 1.602x 10^-19 Coulombs |
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| the closer the proton to neutron ration, the _______ |
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| less radioactive the nuclide is |
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| what is used to study the thyroid? |
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| iodine |
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| what is used to study the red blood cells |
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| iron |
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| what is used to study the heart muscle after a heart attack? |
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| thallium |
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| name for group 1 |
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| alkali metals |
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| name fro group 2 |
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| alkaline earth metals |
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| name for group 7 |
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| halogens (salt formers) |
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| name for group 8 |
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| noble gases |
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| mass of proton |
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| 1.673x10^-27kg |
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| mass of neutron |
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| 1.675x10^-27 |
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| mass of electron |
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| 9.11x10^-31 |
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| unequal sharing of electrons |
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| polar |
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| equal sharing of electrons |
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| nonpolar |
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| substance that produces OH ions in an aqueous solution, proton acceptor |
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| base |
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| loss of electrons |
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| oxidation |
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| gained electrons |
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| reduction |
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| Molarity formula |
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| moles solute/liters solution |
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| Sb-Antimony |
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| stibium |
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| Hg-Mercury |
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| Hydragyrum |
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| K-Potassium |
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| Kallium |
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| Pb-Lead |
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| Plumbum |
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| Fe-Iron |
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| Ferrum |
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| Au-Gold |
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| Aurum |
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| Ag-Silver |
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| Argentum |
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| Sn-Tim |
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| Stannum |
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| Na-Sodium |
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| Natrium |
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| W-Tungsten |
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| Wolfram |
