Redox Reactions
Bayani Gaba-gaba
A furnace in Nigeria, Brazil or China spends its whole working life pulling oxygen off iron ore, and the moment the finished steel leaves the mill the air begins putting that oxygen back. Extraction and corrosion look like completely unrelated pieces of chemistry. They are the same process running in opposite directions, and once you can see that, a large part of this course stops being a list of separate reactions and turns into one idea wearing different clothes.
That idea is redox, and this specification gives you a single, very portable test for spotting it: follow the oxygen. A substance that finishes with more oxygen than it started with has been oxidised, one that finishes with less has been reduced, and any reaction where both of those are going on at once is a redox reaction. You will finish this lesson able to take an equation you have never seen before, decide in under a minute which substance was oxidised and which was reduced, and say exactly how you know.
Manufura
- Oxidation can be described as the gain of oxygen by a substance and reduction as the loss of oxygen from a substance. Students should be able to describe chemical reactions within this specification in terms of oxidation and reduction using the definitions above.
- When oxidation and reduction are happening at the same time this is known as a redox reaction, for example: Fe2O3 + 3 CO 2 Fe + 3 CO2 Oxidation
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Redox Reactions. 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 of these describes oxidation? A. the gain of oxygen by a substance B. the loss of oxygen from a substance C. a rise in the temperature of a substance D. the formation of a precipitate Answer: A
- In the reaction Fe2O3 + 3 CO -> 2 Fe + 3 CO2, which substance is oxidised? A. Fe2O3 B. CO C. Fe D. CO2 Answer: B
- Zinc oxide is heated with carbon: 2 ZnO + C -> 2 Zn + CO2. Which substance is reduced? A. carbon B. zinc C. zinc oxide D. carbon dioxide Answer: C
- Which statement about a redox reaction is correct? A. Oxidation happens first and reduction happens afterwards. B. Only reactions that involve a metal can be redox reactions. C. Oxidation and reduction take place at the same time. D. A substance that is reduced always ends up with a smaller mass. Answer: C
- Carbon dioxide is passed over hot carbon: CO2 + C -> 2 CO. Which statement is correct? A. Carbon is reduced and carbon dioxide is oxidised. B. Carbon is oxidised and carbon dioxide is reduced. C. Neither substance is oxidised or reduced, because both contain carbon. D. Both substances are oxidised. Answer: B
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Redox Reactions? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
