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.

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 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 lesson recaps chemical formula, Ar and Mr as well as using these in reacting masses (without the mole) and percentage composition. Suitable for GCSE, IGCSE and year 12 students.

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.

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

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.

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

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

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 introduces students into how to apply the mole concept to solutions and solve a range of problems (answers included). The final slide leads onto the next planned lesson which is to create a stock solution of sodium hydroxide.

This presentation and student practical sheet guide students through the technique of preparing a stock solution of NaOH for titration against a primary standard (KHP).

This lesson and includes teaching activities to guide students through the mole concept, including applying the molar volume of a gas and the Avogadro constant. Starting activity estimating grains of sand on a beach provides a great opportunity to discuss the magnitude of the Avogadro constant. A nice visual way to relate this in class is to have 1 mol of charcoal powder or NaCl measured out for students to see. Some IB MCQ questions and answers also provided on the final slides as examples.

This resource was designed for teaching IB Standard Level acid/base calculations but is suitable for any courses that require students to calculate pH for strong acid/bases and use Kw. Answers to problems can be found in the notes.

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 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.