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The Nature of Sciencefree16 June 2019

I received an e-mail from a student (not someone I teach) which included the following:"Since I am new to the IB, could you tell me what has been the toughest topic for students generally in the exams... more

Identification from spectra: Question 815 June 2019

Identify compound H from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound HElementPercentage by massCarbon80.56 more

Critical thinkingfree9 June 2019

A few years ago, Tesco’s, a large UK supermarket chain, put out a statement about its Christmas trading called ‘Tesco’s Christmas in numbers’.Part of the statement said:“Tesco will also sell... more

Metals & ICP spectroscopy questions9 June 2019

1. Aluminium is produced by electrolysing a molten solution of alumina, Al2O3, in cryolite, Na3AlF6, using graphite electrodes.(a) Explain why a molten solution of the alumina dissolved in cryolite is... more

Materials science introduction questions 3 June 2019

1. Elemental copper does occur in nature, but copper is mainly extracted from its sulfide, carbonate or oxide minerals. Tin does not occur naturally in the elemental state. The main ore of tin is cassiterite,... more

Identification from spectra: Question 728 May 2019

Identify compound G from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound G.ElementPercentage by massCarbon28.76 more

Identification from spectra: Question 622 May 2019

Identify compound F from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound FElementPercentage by massCarbon48.63 more

Identification from spectra: Question 516 May 2019

Identify compound E from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound EElementPercentage by massCarbon54.52 more

Identification from spectra: Question 410 May 2019

Identify compound D from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound DElementPercentage by massCarbon29.29 more

Resources4 May 2019

A good library and IT resources are essential1. The current EE guide is dated 'for first exams 2018'. This can be downloaded from the programme resources section of the My IB website. This guide contains... more