Reactivity Series
Gbogbo ọrọ náà
Some metals fizz violently when dropped into water while others sit unchanged for centuries. This difference in behaviour is not random: it follows a pattern called the reactivity series. Once you know where a metal sits in that series, you can predict whether it will displace another metal from a compound, how it should be extracted from its ore, and even how to stop iron from rusting.
In this lesson you will learn the order of reactivity for common metals, explore displacement reactions as a tool for ranking metals, investigate the conditions for rusting and the methods used to prevent it, and master the definitions of oxidation and reduction in terms of both oxygen and electron transfer.
Ebumnobi
- Understand how metals can be arranged in a reactivity series based on their reactions with water and dilute acids
- Understand how metals can be arranged in a reactivity series based on their displacement reactions
- 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, galvanising and sacrificial protection
- Understand the terms: oxidation, reduction, redox, oxidising agent and reducing agent in terms of gain or loss of oxygen and electrons
- Investigate reactions between dilute hydrochloric and sulfuric acids and metals
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Reactivity Series. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which of the following metals reacts most vigorously with cold water? A) Iron B) Zinc C) Potassium D) Copper Answer: C
- A piece of iron is placed in copper(II) sulfate solution. What is observed? A) No change B) The solution turns green and copper forms on the iron C) The iron dissolves and the solution stays blue D) Bubbles of gas appear Answer: B
- In the reaction Mg + CuO -> MgO + Cu, which substance is the reducing agent? A) CuO B) MgO C) Cu D) Mg Answer: D
- Which conditions are needed for iron to rust? A) Water only B) Oxygen only C) Both water and oxygen D) Water, oxygen and an acid Answer: C
- Which method of rust prevention involves coating iron with zinc? A) Painting B) Alloying C) Galvanising D) Electroplating Answer: C
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Reactivity Series? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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