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 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 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 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 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)
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.
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 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 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 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 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 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.
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 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 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.