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Identification from spectra: Question 218 April 2019

Identify compound B from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound BElementPercentage by massCarbon15.40 more

Identification from spectra: Question 1 12 April 2019

Identify compound A from the data (a – d) given and explain how you arrived at your answer.a) Elemental analysis of compound Ab) Mass spectrum of compound Ac) Infrared spectrum of compound A more

Advice to students (Paper 3)6 April 2019

1. Revision. Go through the syllabus thoroughly for the option you have studied checking that you know and understand the chemistry given in the syllabus under 'Nature of Science', 'Understandings', 'Applications... more

Advice to students (Paper 2)6 April 2019

1. Revision. As for Paper 1 go through the syllabus thoroughly checking that you know and understand the chemistry given in the syllabus under 'NoS', 'Understandings', 'Applications and skills' and 'Guidance'... more

Advice to students (Paper 1)free6 April 2019

1. Revision. Go through the syllabus thoroughly checking that you know and understand the chemistry given under 'Nature of Science', 'Understandings', 'Applications and skills' and 'Guidance' for each... more

Index of hydrogen deficiency questions3 April 2019

1. Alkanes have the general formula CnH2n+2 and alkenes have the general formula CnH2n.Explain why a compound with the formula C6H12 can be classed either as an alkene or as a type of alkane.2. Calculate... more

Superconducting metals & X-ray crystallography free27 March 2019

In January 2017 yet another revised version of the data booklet became available. However there is still a real problem with the atomic radii given for the elements in Groups 1, 2 and 13.The images below... more

Graphical techniques questions25 March 2019

1. Sketch three separate graphs to show how the concentration of reactant A varies with time for :(a) a zero order reaction with respect to [A].(b) a first order reaction with respect to [A].(c) a second... more

Analysis of Cu(II) ions in solution 19 March 2019

The use of a visible spectrophotometer is not specifically mentioned under the Mandatory laboratory components and in fact the Beer-Lambert Law only really needs to be taught if your Higher Level students... more

Complete course for studentsfree18 March 2019

The purpose of this section is to provide complete syllabus coverage specifically for students who have been signed up to student access by their teacher in a subscribing school. It is designed to be... more