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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 (Reprinted with minor amendments in 2023)
Corrigenda (April 2021)
Corrigenda (March 2019)
Corrigenda (June 2018)
List of Amendments (April 2019)



Units 2, 3, 5, 7, 9, 12 and 13
Teaching resources for teachers:
  • Teaching plan
  • Worksheets (with suggested answers)
  • Suggested teaching scheme
Worksheets for students



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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Device that uses sweat to generate electricity(11/2021) COMPUTER SCIENCE 
Days of strong humid heat are on the rise(08/2020) ENVIRONMENT 
Governments are fighting large swarms of locusts(08/2020) ENVIRONMENT 
The Australia's bushfires brought huge damages to the wildlife(04/2020) ENVIRONMENT 



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



Travel with Aristo — Japan