This presentation spans a series of lessons (2-3) covering the expressions of Ka and Kb and their magnitude. Slides contain modeled answers and questions for students to try, along with answer slides.

All empirical formula resources which cover: How to calculate empirical formula from mass or percentage composition How to calculate empirical formula from experimental data and associated sources of error and calculating uncertainty Water of crystallisation - preparing and analysing magnesium sulphate (includes a 20 mark formative assessment with mark scheme).

This presentation and student practical sheet guide students through preparing a stock solution of hydrolysed aspirin which is then titrated against HCl to enable moles of aspirin to be determined.

This complete workbook for structure 1 provides a comprehensive blend of class tasks, practical experiments, and exam-style questions to reinforce learning and ensure thorough preparation for assessments. The workbook includes key content aligned with the IB Chemistry syllabus, ensuring that students can build a strong foundation in this unit.

This presentation and student practical sheet introduces the Arrhenius Equation and how it can be modified to determine activation energy (Ea) for a simple experiment using UV beads. The advantage of this task is it is far more straightforward for students to complete compared to more complex class practicals such as the reaction between bromate and bromide ions or the iodine clock reaction. There is also much less prep and tidying! This activity includes a spreadsheet of sample data and calculation which can be shared with students.

This presentation and student practical sheet run through the basics of pH curves for strong monoprotic acids and bases. The student worksheet contains questions with worked answers attached at the end.

This complete lesson includes worked examples and a student practise sheet of calculations related to this lesson and R3.1.4 pH calculations.

This lesson pack introduces students to buffers, including an example in the body, plus calculation worksheet (with mark scheme) and student practical sheet to make their own buffer solution (recapping basic stoichiometry and making stock solutions) as well as comparing final pH of buffer using pH meter.

This is a complete bundle of resources including presentations, student work sheets and students practical sheets to meet the new IB Reactivity 3.1 syllabus. Calculations in presentations and worksheets have worked answers provided. The resources here may also be appropriate for other exam boards and includes the following sequence of lessons: Development of acid/base theory Reactions of acids and bases Conjugates pH scale and pH calculations Using the ionic product of water (Kw) Strong and weak acids pH curves (SL & HL) pOH scale and calculations Using Ka, pKa, Kb and pKb pH of salt solutions Indicators Buffers (including calculations)

This 14 page guide provides students with a clear framework and instruction to structure their internal assessment (IA) for chemistry (first assessment 2025). It includes guidance on writing a descriptive RQ, how to format their report and how to process their data and report uncertainties.