The 2B curriculum generally includes the following units with specific exercises found in the assignment books:
Finding the full answer key for the can be done through several educational document platforms. Since Book 2B typically covers Units 9 through 11 , you can find specific unit answers on the following sites: Unit 9: Acids and Alkalis
The is a workbook used by secondary students in Hong Kong following the "Integrated Science" curriculum. While "stories" aren't typically part of a science answer key, many students find themselves in a "story-worthy" scramble when trying to finish these assignments!