Acids And Alkalis
Gbogbo ọrọ náà
From the citric acid in a lemon to the sodium hydroxide in oven cleaner, acids and alkalis are part of everyday life. Understanding how they behave, how to measure their strength, and how they react with each other is one of the core skills in chemistry.
In this lesson you will learn how to use indicators and the pH scale to classify solutions, what makes a substance acidic or alkaline at the particle level, and how neutralisation reactions work. These ideas appear across both Paper 1 and Paper 2.
Ebumnobi
- Describe the use of litmus to distinguish between acidic and alkaline solutions
- Understand how the pH scale, from 0-14, can be used to classify solutions as strongly acidic (0-3), weakly acidic (4-6), neutral (7), weakly alkaline (8-10) and strongly alkaline (11-14)
- Describe the use of universal indicator to measure the approximate pH value of an aqueous solution
- Know that acids in aqueous solution are a source of hydrogen ions and alkalis in aqueous solution are a source of hydroxide ions
- Know that alkalis can neutralise acids
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 Acids And Alkalis. 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.
- What colour does litmus turn in an alkaline solution? A) Red B) Green C) Blue D) Yellow Answer: C
- A solution with pH 3 is classified as: A) Strongly alkaline B) Weakly alkaline C) Neutral D) Strongly acidic Answer: D
- Which ion do all acids produce in aqueous solution? A) OH- B) H+ C) Na+ D) Cl- Answer: B
- What is the salt produced when hydrochloric acid reacts with sodium hydroxide? A) Sodium sulfate B) Sodium nitrate C) Sodium chloride D) Sodium carbonate Answer: C
- When an acid reacts with a metal carbonate, the gas produced is: A) Hydrogen B) Oxygen C) Nitrogen D) Carbon dioxide Answer: D
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 Acids And Alkalis? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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