Cov piv txwv nto moo ntawm cov pob zeb sib xyaw yog Mayon Volcano, Philippines, Mount Fuji hauv Nyij Pooj, thiab Mount Rainier, Washington, Asmeskas Qee qhov sib xyaw volcanoes ncav cuag ob txog peb txhiab meters hauv qhov siab tshaj lawv cov hauv paus. Feem ntau cov volcanoes sib xyaw tshwm sim nyob rau hauv chains thiab sib cais los ntawm ob peb kaum kilometers
Kev piav qhia txog kev sau npe rau PbO, Lead (II) oxide. Ua ntej peb txiav txim siab seb PbO yog ib qho ionic lossis molecular (covalent) compound siv lub sijhawm teem sijhawm. Los ntawm lub sij hawm lub sij hawm Pb yog hlau thiab O yog nonmetal. Yog li PbO yog ib qho ionic compound vim nws muaj hlau thiab nonmetal
Cov theem, los ntawm qhov tsawg tshaj plaws mus rau loj, yog: molecule, cell, ntaub so ntswg, lub cev, lub cev, kab mob, kab mob, pej xeem, zej zog, ecosystem, biosphere
Chemistry Laboratories feem ntau ntsuas av pH siv dej thiab calcium chloride. Txoj kev yooj yim tshaj plaws yog ntsuas pHw nrog lub ntsuas pH portable. Xwb, cov neeg cog qoob loo tuaj yeem txiav txim siab av pH siv cov khoom siv kuaj xim xim
COV LUS TSEEM CEEB: New York nyob hauv ob sab qaum teb thiab sab hnub poob hemispheres
Thaum cov kua qaub yaj hauv dej, ib qho proton (hydrogen ion) raug xa mus rau cov dej molecule los tsim cov hydroxonium ion thiab qhov tsis zoo ion nyob ntawm seb cov kua qaub koj pib li cas. Cov kua qaub muaj zog yog ib qho uas yuav luag 100% ionised hauv kev daws. Lwm cov tshuaj muaj zog muaj xws li sulfuric acid thiab nitric acid
Kev sib koom ua ke ntawm cov dej molecules pab cov nroj tsuag nqa dej ntawm lawv cov hauv paus hniav. Ntawm qib roj ntsha, dej lub luag haujlwm ua cov kuab tshuaj pab cov hlwb thauj thiab siv cov khoom xws li oxygen lossis cov as-ham. Cov dej-raws li kev daws teeb meem zoo li ntshav pab nqa cov molecules mus rau qhov chaw tsim nyog
Concave. Concave piav txog qhov nkhaus sab hauv; nws opposite, convex, piav txog ib tug nkhaus uas bulges sab nraud. Lawv yog siv los piav qhia txog cov nkhaus nkhaus, zoo li cov hom pom hauv daim iav lossis lo ntsiab muag. Yog tias koj xav piav qhia txog lub tais, koj tuaj yeem hais tias muaj qhov xiav xiav loj ntawm qhov nruab nrab ntawm sab concave
Nrov lus teb (1) Quasi-static load txhais tau hais tias lub load yog siv maj mam hais tias tus qauv deforms kuj qeeb heev (tsawg heev npaum li cas) thiab yog li ntawd lub inertia quab yuam yog heev me me thiab yuav ignored
Kev siv Hydrocarbons Qhov tseem ceeb tshaj plaws ntawm kev siv hydrocarbons yog rau roj. Roj av, roj av, roj av, roj av, roj diesel, roj dav hlau, thee, kerosene, thiab propane tsuas yog qee qhov siv hydrocarbon fuels xwb. Hydrocarbons kuj tseem siv los ua cov khoom, nrog rau cov yas thiab cov ntaub hluavtaws xws li polyester
Teb thiab piav qhia: Subatomic hais feem ntau nyob hauv ob qhov chaw; cov protons thiab neutrons nyob rau hauv lub nucleus ntawm qhov chaw ntawm lub atom, thaum lub electrons
Raws li NASA, tseem tsis tau muaj pov thawj tias muaj pov thawj dab noj hnub muaj kev cuam tshuam rau tib neeg lub cev. Tab sis lunar eclipse ua rau muaj kev puas siab puas ntsws vim tib neeg txoj kev ntseeg thiab kev ua. Qhov kev puas siab puas ntsws no tuaj yeem ua rau qee qhov cuam tshuam rau lub cev thiab
Lub ntsiab qauv ntawm lysozyme yog ib qho polypeptide uas muaj 129 amino acids. Nyob rau hauv physiological tej yam kev mob, lysozyme yog folded rau hauv ib tug compact, globular qauv nrog ib tug ntev cleft nyob rau hauv lub protein nto
Kov lub ntsis ntawm lub tester screwdriver rau cov hlau uas koj tab tom sim, nco ntsoov tuav lub tester screwdriver lub insulated kov. Saib ntawm qhov kov ntawm lub hau ntswj. Yog hais tias lub teeb me me neon nyob rau hauv lub kov teeb, muaj zog mus rau hauv Circuit Court
Thawj amines raug muab npe los ntawm kev ntxiv cov lus 'amine' rau lub npe alkyl. Tus lej nyob rau hauv pem hauv ntej qhia tias cov pa roj carbon pawg amine txuas nrog dab tsi
Cov molecules thiab ions txav spontaneously cia lawv cov concentration gradient (piv txwv li, los ntawm ib cheeb tsam ntawm siab dua mus rau ib cheeb tsam ntawm qis concentration) los ntawm diffusion. Molecules thiab ions tuaj yeem txav mus rau lawv cov concentration gradient, tab sis cov txheej txheem no, hu ua kev thauj mus los, yuav tsum tau siv lub zog (feem ntau los ntawm ATP)
Yog li ntawd, DNA replication yog hu ua semiconservative. Lub sij hawm semiconservative yog hais txog qhov tseeb hais tias ib nrab ntawm cov thawj molecule (ib qho ntawm ob strands nyob rau hauv ob lub helix) yog "tshem" nyob rau hauv lub tshiab molecule
Kev sib raug zoo ntawm cov ntim ntawm cov pyramids thiab prisms yog tias thaum lub prism thiab pyramid muaj tib lub hauv paus thiab qhov siab, qhov ntim ntawm lub pyramid yog 1/3 ntawm qhov ntim ntawm lub prism
Cov huab cua muaj cov txheej txheem raws li qhov kub thiab txias. Cov txheej no yog troposphere, stratosphere, mesosphere thiab thermosphere. Ib cheeb tsam ntxiv ntawm txog 500 km saum lub ntiaj teb saum npoo yog hu ua exosphere
Lub multichannel pipettor, qee zaum hu ua multichannel pipette lossis rov pipettor, yog siv rau hauv kev tshawb fawb thiab kev sim cov ntawv thov los sau ntau lub microplates nrog cov kua dej. Pipette cov lus qhia yog siv los ntim cov kua xa mus
Buckminsterfullerene yog qhov zoo tshaj plaws. Buckminsterfullerene yog thawj fullerene tau pom. Nws cov molecules yog tsim los ntawm 60 carbon atoms koom ua ke los ntawm cov khoom muaj zog covalent bonds. Molecules ntawm C 60 yog spherical
Ib qho multimeter lossis multitester, tseem hu ua VOM (volt-ohm-milliammeter), yog ib qho khoom siv hluav taws xob ntsuas uas sib xyaw ua ke ntau yam ntsuas hauv ib chav. Ib tug raug multimeter yuav ntsuas voltage, tam sim no, thiab kuj. Analog multimeters siv lub microammeter nrog lub pointer txav los tso saib kev nyeem ntawv
Ib qho qauv tsim zes (qee zaum hu ua hierarchical design) yog siv rau kev sim uas muaj kev txaus siab rau cov kev kho mob thiab cov kev sim ntsuas tau muab faib ua cov qauv
Fallout: New Vegas Yog tias McNamara tseem yog Txwj Laug, tos 24 teev sab nraum lub bunker kom tshem tawm qhov kev kaw tseg, ces tham nrog nws. Qhia rau nws tias xav koom nrog Brotherhood of Steel yuav pib qhov Kev Pom Kev Pom Kev Pom Kev Tsis Pom Kev. Thaum qhov no tiav lawm, ib tug yuav tau txais kev cob qhia Power Armor
Ib tug dej phwj yog ib feem ntawm cov av ntws los ntawm ib tug dej thiab nws tributaries. Nws encompasses tag nrho cov av saum npoo dissected thiab ntws los ntawm ntau kwj thiab kwj deg uas ntws downhill rau ib leeg, thiab nws thiaj li mus rau hauv Milwaukee River
Dolomite tsis tshua pom muaj nyob rau hauv ib puag ncig niaj hnub sedimentary, tab sis dolostones muaj ntau heev hauv cov ntaub ntawv pob zeb. Lub cev muaj zog ntawm Dolomite Chemical Classification Carbonate Diaphaneity Transparent to translucent Cleavage Perfect, rhombohedral, peb cov lus qhia Mohs Hardness 3.5 txog 4
Cov pa roj carbon dioxide tsis yog tib qho chaw uas muaj cov pa roj carbon dioxide tab sis tsis yog cov organic. Lwm cov piv txwv suav nrog carbon monoxide (CO), sodium bicarbonate, ironcyanide complexes, thiab carbon tetrachloride. Raws li koj xav tau, cov pa roj carbon monoxide tsis yog organic
George Ritzer
Lub voj voog Calvin siv lub zog los ntawm cov khoom siv hluav taws xob luv luv los hloov cov pa roj carbon dioxide thiab dej rau hauv cov organic tebchaw uas siv tau los ntawm cov kab mob (thiab los ntawm cov tsiaj uas pub rau nws). Cov txheej txheem no tseem hu ua carbon fixation. Lub enzyme tseem ceeb ntawm lub voj voog yog hu ua RuBisCO
Cov kab mob sib sau ua ke ntau tshaj plaws nyob ze ntawm ib feem ntawm cov alga uas tau nthuav tawm cov xim liab thiab xiav wavelengths. Engelmann qhov kev sim ua kom pom tias lub teeb liab thiab xiav yog lub zog zoo tshaj plaws rau photosynthesis
Leyland cypress, Cupressus × leylandii, feem ntau hu ua yooj yim li leylandii, yog ib tsob ntoo loj hlob sai heev uas siv ntau hauv horticulture, feem ntau rau hedges thiab cov ntxaij vab tshaus. Txawm nyob rau ntawm qhov chaw ntawm cov kab lis kev cai tsis zoo, cov nroj tsuag tau paub tias loj hlob mus rau qhov siab ntawm 15 meters (49 ft) hauv 16 xyoo
Cov kua qaub txhais tau tias yog ib yam khoom uas nws cov kua dej qab qab zib, tig xiav litmus liab thiab neutralizes hauv paus. Ntsev yog cov khoom nruab nrab uas nws cov kua dej tsis cuam tshuam rau litmus. Raws li Faraday: acids, bases, thiab ntsev yog hu ua electrolytes
Isotopes ntawm Hydrogen Protium yog cov hydrogen isotope tshaj plaws, nrog kev nplua nuj ntawm 99.98%. Nws muaj ib tug proton thiab ib tug electron. Deuterium yog hydrogen isotope uas muaj ib tug proton, ib tug neutron thiab ib tug electron. Tritium yog hydrogen isotope uas muaj ib tug proton, ob neutrons thiab ib tug electron
Ionic daim ntawv cog lus, tseem hu ua electrovalent bond, hom kev sib txuas tsim los ntawm electrostatic attraction ntawm oppositely them ions nyob rau hauv ib tug tshuaj compound. Xws li daim ntawv cog lus thaum lub valence (sab nrauv) electrons ntawm ib lub atom raug xa mus tas li mus rau lwm lub atom
Teb: Qhov ceev yog txhais raws li qhov loj ntawm ib chav tsev ntim. Lub ntiajteb txawj nqus tshwj xeeb yog qhov ntom ntawm cov khoom ntawm qhov kub thiab txias muab faib los ntawm qhov ntom ntawm cov dej ntawm qhov kub thiab txias; qhov ntsuas kub feem ntau yog 20 degrees Celsius
Muaj peb hom pob zeb folding: monoclines, synclines, thiab anticlines. Ib tug monocline yog ib qho yooj yim khoov nyob rau hauv cov pob zeb txheej kom lawv tsis kab rov tav. Anticlines yog folded pob zeb uas arch upward thiab poob deb ntawm qhov chaw ntawm lub quav
DNA yog ob-stranded, thaum RNA yog ib leeg-stranded. RNA muaj ribose ua suab thaj, thaum DNA muaj deoxyribose. Tsis tas li ntawd, peb lub hauv paus nitrogenous yog tib yam hauv ob hom (adenine, cytosine, thiab guanine), tab sis DNA muaj thymine thaum RNA muaj uracil
Cov yam ntxwv ntawm oxymercuration- demercuration yog: Tsis muaj kev hloov pauv (tsis muaj carbocation nruab nrab, cyclic mercurinium ion yog qhov nruab nrab) Cov khoom lag luam zoo sib xws rau (yuav luag tshwj xeeb) Markovnikov ntxiv dej (Regioselectivity kwv yees los ntawm Markovnikov txoj cai nyiam feem ntau hloov cawv)
Cov lej tiag muaj xws li cov lej suav suav, cov lej suav tag nrho, cov lej suav, cov lej sib piv (feem feem thiab rov ua dua lossis txiav cov lej lej), thiab cov lej tsis sib xws. Cov naj npawb ntawm cov lej yog tag nrho cov lej uas muaj qhov chaw nyob ntawm kab tom qab.Sets of Numbers. Ntuj naj npawb 1, 2, 3,
Citrus txiv hmab txiv ntoo tuaj yeem ua tau qhov no vim tias lawv muaj citric acid, ib qho electrolyte uas tso cai rau hluav taws xob ntws.Lub hwj chim tiag tiag los ntawm kev sib pauv hluav taws xob ntawm ib khub electrodes uas koj ntxig rau hauv cov txiv hmab txiv ntoo