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Book 2B Unit 9


Unit 9 Acids and Alkalis

 

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9.1 Common acids and alkalis
9.2 Acid-alkali indicators and pH scale
9.3 Neutralization
9.4 Corrosive nature of acids
9.5 Potential hazards related to the use of acids and alkalis
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2B



Unit 9



Unit 9
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Unit 9
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Unit 9
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Unit 9
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Unit 9
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Unit 9
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Corrigenda (April 2021)
Corrigenda (March 2019)
Corrigenda (June 2018)
List of Amendments (April 2019)



Using a data-logger (Related to p.24)  SPS: PA 
Classifying substances into acidic, alkaline and neutral (Related to p.28)  SPS: OB, CS 
Interpreting pH curves (Related to p.33)  SPS: IF 
Writing word equations (Related to p.40, 48, 52)  SPS: CM 
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Key Steps of Scientific Investigation
Scientific Investigation Training Programme



Science English Basics
Unit 9
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Days of strong humid heat are on the rise(08/2020) ENVIRONMENT   NEW 
Governments are fighting large swarms of locusts(08/2020) ENVIRONMENT   NEW 
The Australia's bushfires brought huge damages to the wildlife(04/2020) ENVIRONMENT 



Reusing hard disk and Replacing it with DNA  NEW 
Household project: Make your home 'smart' using IoT and IFTTT  NEW 
Detection in daily life: Using Google Science Journal and ChemEye  NEW