Giant Covalent Structures
Bayani Gaba-gaba
Diamond and graphite are both made of nothing but carbon atoms, yet one is the hardest natural substance known and the other is soft enough to write with. The reason is not the atoms but how they are bonded into giant structures. This is one of chemistry's most striking lessons.
In this lesson you will learn what a giant covalent structure is, and how the different arrangements of carbon atoms in diamond and graphite give them such contrasting properties. You will link each property directly to the structure and bonding.
Manufura
- Describe the giant covalent structures of graphite and diamond.
- Relate the structures and bonding of graphite and diamond to their uses, limited to: (a) graphite as a lubricant and as an electrode (b) diamond in cutting tools.
- [Supplement] Describe the giant covalent structure of silicon(IV) oxide, SiO₂.
- [Supplement] Describe the similarity in properties between diamond and silicon(IV) oxide, related to their structures.
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Giant Covalent Structures. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which is a property of all giant covalent structures? A. Low melting point B. Very high melting point C. Made of small molecules D. Soft Answer: B
- How many covalent bonds does each carbon atom form in diamond? A. 1 B. 2 C. 3 D. 4 Answer: D
- Why does graphite conduct electricity? A. It contains ions B. It has delocalised electrons free to move C. It is a metal D. Its bonds are weak Answer: B
- Why is graphite soft and slippery? A. Its atoms are far apart B. Its layers can slide over one another C. It has only one bond per atom D. It melts easily Answer: B
- Which substance has a giant covalent structure? A. Carbon dioxide B. Water C. Diamond D. Oxygen Answer: C
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Giant Covalent Structures? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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