Reactivity Series
Bayani Gaba-gaba
Some metals react violently the moment they touch water. Others sit in the ground for centuries without corroding. Arranging metals from the most reactive to the least reactive gives the reactivity series - a ranking that explains everything from how metals are extracted to why ships are fitted with zinc blocks.
In this lesson you will learn the order of the reactivity series, how it is deduced from reactions with water and acids, and how it connects to displacement reactions, rusting, and rust prevention.
Manufura
- Understand how metals can be arranged in a reactivity series based on their reactions with water, and dilute hydrochloric or sulfuric acid
- Know the order of reactivity of these metals: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, gold
- Know the conditions under which iron rusts
- Understand how the rusting of iron may be prevented by barrier methods and galvanising
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
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Nazarin Darasi
Barka da kammala darasi akan Reactivity Series. 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 metal is the most reactive? A) Iron B) Copper C) Potassium D) Zinc Answer: C
- What are the two conditions needed for iron to rust? A) Water and carbon dioxide B) Water and oxygen C) Oxygen and nitrogen D) Water and acid Answer: B
- In a displacement reaction, a more reactive metal: A) Dissolves in the solution B) Replaces a less reactive metal from its compound C) Forms a gas D) Changes colour Answer: B
- Galvanising involves coating iron with: A) Copper B) Tin C) Zinc D) Aluminium Answer: C
- Which metal does NOT react with dilute hydrochloric acid? A) Magnesium B) Zinc C) Iron D) Copper Answer: D
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Corrosion
Define corrosion
"Chemistry: Corrosion" 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/17-6-corrosion. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Yi Aikin Tambayoyin Gwaji
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