Reactivity Series
Muhtasari
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.
Malengo
- 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
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Reactivity Series. 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.
- 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
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Reactivity Series? 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.
