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.

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 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 presentation and student practical sheet looks through qualities of indicators and factors considered when selecting an appropriate indicator. The student practical sheet gets students to make ammonium sulphate using titration and methyl orange and also includes past questions with mark scheme.

This presentation and student practical sheet looks at all the possible pH curves produced from the possible strong/weak acid and base combinations. They student practical sheet runs students through adding sodium hydroxide to ethanoic acid and separately ammonia with hydrochloric acid. The practical explains mathematically why pH = pKa at the half equivalence point.

This lesson looks at salt hydrolysis and how to predict the pH of salt solutions. Presentation includes link to Wordwall task.

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.

This complete lesson includes a presentation and student calculation worksheet with worked answers on the second page for using the pOH scale (HL).

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 lesson includes the presentation and student practical sheet to run through the various methods for determining if an acid is strong or weak. The document includes past paper questions with their mark schemes.

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

Complete lesson which explains the history of the pH scale, quick student practical comparing the use of Universal Indicator with a pH meter as well as worked examples for calculations. Student practise questions with answers are provided in the slides.

This lesson combines Reactivity 3.1.2 and 3.1.3 to deduce formula of conjugate species and recognise them in equations for various reactions. The lesson also includes link to Wordwall task to match up conjugate pairs.

Presentation aimed as a starting lesson for introducing acid-base theory for KS4 or KS5. The lesson defines acids, bases and alkalis and includes a student task to develop a timeline on changes in acid-base theory from selected literature.

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 lesson introduces acids and bases, starting with an activity to guide students through how ideas of acids and bases have changed over time (NOS for IB curriculum). The lesson links GCSE knowledge to defining them as Bronsted-Lowry acids and bases.

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 assessed student practical sheet guide students through the use of colourimeters and application of Beer’s law to determine the rate of reaction between sodium thiosulphate and hydrochloric acid. Mark scheme included.

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 lesson introduces using a colourimeter and the principle of Beer’s Law (includes link to Phet simulation). The main task is for students to create their own calibration curve for copper sulphate solution and use this to determine the concentration of a unknown solution of CuSO4.