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Video: Koj ua li cas chemical bonds?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj zog chemical bonds yog lub zog intramolecular uas tuav cov atoms ua ke hauv molecules. Ib tug muaj zog chemical bond yog tsim los ntawm kev hloov lossis sib koom ntawm cov hluav taws xob ntawm cov chaw atomic thiab tso siab rau electrostatic attraction ntawm cov protons hauv nuclei thiab cov electrons hauv orbitals.
Ua raws li qhov no, 4 hom kev sib cog lus hauv chemistry yog dab tsi?
4 Hom Tshuaj Bonds
- 1 Ionic daim ntawv cog lus. Ionic bonding cuam tshuam nrog kev hloov ntawm ib qho hluav taws xob, yog li ib lub atom tau txais ib qho hluav taws xob thaum ib lub atom poob ib qho hluav taws xob.
- 2 Covalent bond. Kev sib cog lus ntau tshaj plaws hauv cov organic molecules, covalent daim ntawv cog lus koom nrog kev sib koom ntawm electrons ntawm ob lub atoms.
- 3 Polar daim ntawv cog lus.
Ib yam li ntawd, qhov twg yog cov tshuaj muaj zog tshaj plaws? ionic daim ntawv cog lus
Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog 3 hom kev sib cog lus tshuaj?
Muaj peb yam tseem ceeb ntawm daim ntawv cog lus: ionic , covalent thiab hlau. Cov ntawv cog lus no tshwm sim thaum cov hluav taws xob hloov pauv los ntawm ib qho atom ob qho tib si, thiab yog qhov tshwm sim ntawm qhov kev nyiam ntawm cov ions uas ua rau muaj kev cuam tshuam. Qhov no tshwm sim ntawm atoms nrog qhov sib txawv electronegativity feem ntau loj dua 1.8.
Puas yog dej yog covalent daim ntawv cog lus?
H2O os dej Raws li nws yog feem ntau hu ua yog ib tug molecule uas muaj 2 Hydrogen molecules bonded rau ib Oxygen molecule. Raws li cov lus qhia tau hais tias qhov no ua rau H2O molecule nrog lub polar covalent bond . Zoo, electronegativity yog qhov ntsuas ntawm qhov kev nyiam daim ntawv cog lus nrhiav electrons yog rau lub caij.
Pom zoo:
Qhov twg koj yuav pom hydrogen bonds hauv cov proteins?
Hauv cov qauv thib ob ntawm cov protein, hydrogen bonds tsim ntawm cov pob txha oxygens thiab amide hydrogens. Thaum qhov sib nrug ntawm cov amino acid residues koom nrog hydrogen daim ntawv cog lus tshwm sim tsis tu ncua ntawm txoj haujlwm kuv thiab kuv + 4, ib qho alpha helix yog tsim
Yuav ua li cas koj nyeem ib daim ntawv lo chemical hazard?
Ntawm txhua daim ntawv NFPA, yuav tsum muaj tus lej ntawm xoom mus rau plaub hauv thaj chaw xiav, liab thiab daj. Cov lej qhia txog qib ntawm kev phom sij tshwj xeeb. Cov khoom no yog ib qho kev pheej hmoo rau kev noj qab haus huv hnyav yog tias cov tshuaj tsis raug tswj xyuas kom zoo
Dab tsi yog qhov sib txawv chemical bonds?
Chemical bonds yog lub zog uas tuav cov atoms ua ke los ua cov tebchaw lossis molecules. Cov khoom siv tshuaj muaj xws li covalent, polar covalent, thiab ionic bonds. Atoms nrog qhov sib txawv loj hauv electronegativity hloov electrons los ua ions. Tom qab ntawd cov ions yog attracted rau ib leeg. Qhov kev nyiam no yog hu ua ionic bond
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm covalent bonds nyob rau hauv ib tug compound?
Tus naj npawb ntawm daim ntawv cog lus rau ib qho atom nruab nrab yog sib npaug rau cov xov tooj ntawm cov hluav taws xob hauv lub plhaub valence tag nrho (2 los yog 8 electrons) rho tawm cov valence electrons. Txoj kev no ua haujlwm vim tias txhua daim ntawv cog lus sib cog lus uas ib qho atom tsim ntxiv lwm lub tshuab hluav taws xob rau lub atoms valence plhaub yam tsis hloov nws cov nqi
Yuav ua li cas chemical bonds tshwm sim quizlet?
Ib daim ntawv cog lus tshuaj yog thaum ob lub atoms sib txawv muaj kev sib koom ua ke ntawm hluav taws xob ntawm valence electrons thiab nuclei. Nyob rau hauv dab tsi daim ntawv yuav pom feem ntau atoms nyob rau hauv cov xwm? Nyob rau hauv qhov xwm txheej feem ntau atoms pom nyob rau hauv cov tebchaw tuav nyob rau hauv qhov chaw los ntawm cov tshuaj bonds