Simple Molecules And Covalent Bonds
Muhtasari
The oxygen you breathe, the water you drink and the methane that heats your food are all held together not by transferring electrons but by sharing them. This sharing creates the covalent bond, the glue of most non-metal compounds and the basis of all living matter.
In this lesson you will learn how a covalent bond forms when atoms share a pair of electrons, how to show this with simple diagrams, and how shared pairs build up familiar molecules such as hydrogen, water, methane and carbon dioxide.
Malengo
- [Core] State that a covalent bond is formed when a pair of electrons is shared between two atoms leading to noble gas electronic configurations
- [Core] Describe the formation of covalent bonds in simple molecules, including H , Cl , 2 2 H O, CH , NH and HCl. Use dot-and- 2 4 3 cross diagrams to show the electronic configurations in these molecules
- [Core] Describe the properties of simple molecular compounds: (a) low melting points and boiling points (b) poor electrical conductivity
- [Supplement] Describe the formation of covalent bonds in simple molecules, including CH OH, C H , 3 2 4 O , CO and N . Use dot-and-cross diagrams 2 2 2 to show the electronic configurations in these molecules
Somo la Sauti
Sikiliza somo hili kwenye programu
Ramani ya mawazo
Mada hii imechorwa ili uone jinsi mawazo yanavyounganika.
Fungua ramani ya mawazo kwenye programu
Kadi za kumbukumbu
Mazoezi ya haraka ya kumbukumbu kuhusu kinachopimwa katika mada hii.
Fanya mazoezi ya kadi hizi kwenye programu
Maelezo ya Somo
Dokezo Kamili la Somo Linapatikana kwenye Programu ya Green Bridge
Pata programu ya Green Bridge CBT kwenye simu au kompyuta yako kwa maktaba kamili ya IGCSE: mitihani ya miaka iliyopita, miongozo ya usahihishaji, ramani za mawazo, kadi za marudio na masomo ya sauti.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Simple Molecules And Covalent Bonds. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- A covalent bond is formed when atoms: A. Transfer electrons B. Share a pair of electrons C. Lose protons D. Gain neutrons Answer: B
- Covalent bonds usually form between: A. Two metals B. A metal and a non-metal C. Two non-metals D. Two ions Answer: C
- How many covalent bonds does carbon form in methane, CH4? A. 1 B. 2 C. 3 D. 4 Answer: D
- Simple molecular substances have low melting points because: A. The covalent bonds are weak B. The forces between molecules are weak C. They contain ions D. They have free electrons Answer: B
- Carbon dioxide, CO2, contains: A. Two single bonds B. Two double bonds C. One single bond D. Ionic bonds Answer: B
Fanyia kazi maswali haya kwenye programu
Fanyia kazi maswali haya kwenye programu
Vitabu Vinavyopendekezwa
Jifunze zaidi kutoka vyanzo huria
-
Sehemu ya kitabu
Covalent Bonding
Describe the formation of covalent bonds
"Chemistry: Covalent Bonding" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/7-2-covalent-bonding. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
Vimechapishwa na mashirika mengine chini ya leseni huria na vinatajwa kama wanavyoomba. Viungo hufungua tovuti zao.
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Simple Molecules And Covalent Bonds? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
