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 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 focuses on why and how titration is used as well as a 5 step process students can follow to scaffold their calculations. Resource include presentation and worksheet with answers.

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 lesson pack would be suitable over a 2-3 series and guides students through the preparation of Epsom salt (magnesium sulphate) and analysis to determine its water of crystallisation. This pack includes presentation, student practical sheet plus practical assessment paper with mark scheme included.

This presentation works through how to determine empirical formula from percentage composition or mass, determining molecular formula from empirical formula and Mr. It also includes student practical sheet to determine empirical formula of magnesium oxide with a focus on error and uncertainty in processing answers.

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 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 presentation works through with examples and questions a series of problems linked to determining pH, Ka, pKa, Kb, and pOH for students at higher level (IB), but would be suitable for A Level students. Solutions and answers are in the notes section of the presentation.

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.