Lesson 1:
Online quiz on acids & bases basics to gauge prior knowledge and misconceptions.
Address some gaps in understanding and misconceptions.
Discuss some examples of applications of acids and bases.
Students brainstorm and research some investigation questions.
Lesson 2:
With teacher guidance and approval, students select or refine investigation topic.
Show demo/video of electrical conductivity of various acids and bases, ensuring that ammeters are used as they will be in upcoming simulations. Students can comment on videos with their questions.
Link properties of acids and bases with previous topics such as chemical bonding. Discuss any discrepancies between bonding theory and observations.
Students research the electrical conductivities of substances in their investigation topic.
Lesson 3:
Show demo of pH and indicator colour of various acids and bases, ensuring that pH probes are used.
With teacher guidance, students use PhET simulation to determine any correlation between the variables: type of substances, volume of substance, volume of water, and pH.
Students try to explain the properties at the microscopic level.
Students research the types of substances in their investigation, their pH range in a certain environment, and the impacts.
Lesson 4:
Students explore PhET simulation (microscopic) and share one correlation between variables on Padlet.
Students refine or add to peer work after further exploration in simulations.
Teacher guides discussion and evaluate student work as a class, including sample calculations.
Students research strength of their acid/base in investigation and use dissociation constants to calculate amount of ions in a certain number of moles.
Lesson 5:
Teacher explains the analytical technique of titrations.
Students complete Level 1 of the guidede titration simulation up to Alkali Concentration.
Student watch video on calculating concentration and then complete the quiz.
Teacher goes over challenging problems are summarizes.
Lesson 6:
Students complete Level 1 of the guided titration simulation.
Students conduct preliminary calculations for their investigation and making adjustments to their procedures as necessary.
Lesson 7:
Students collect data for their investigation by performing titrations.
Lesson 8:
Students complete lab report and prepare presentations.
Lesson 9:
Student presentaions on their findings from their investigation.