OCR • Chemistry

OCR AS Level Chemistry B (Salters) H033/02 Chemistry in depth 1 The element magnesium is an important Group 2 metal. Its presence in distant stars has been shown using atomic emission spectra. (a) (i) The atomic emission spectrum of an element shows a series of coloured lines on a black background. Describe how the appearance of the absorption spectrum of the element is similar to and different from its emission spectrum. Similar ........................................................

OCR AS Level Chemistry B (Salters) H033/01 Foundations of chemistry 1 Which ion has the same electron configuration as Ca2+? A Al 3+ B Br – C K+ D Mg2+ Your answer [1] 2 Sodium has a lower melting point than magnesium. What is a reason for this? A Magnesium has more delocalised electrons per atom. B Magnesium is more ionic. C Melting points decrease across Period 3. D Sodium has a covalent structure. Your answer [1] 3 Which row is correct for the...

OCR A Level Chemistry B (Salters) H433/01 Fundamentals of Chemistry 1 Which feature of the structure of the atom was deduced from the Geiger and Marsden experiment? A Atoms consist of electrons, protons and neutrons. B The nucleus is small and dense. C Electrons exist in energy levels/shells. D Electrons exist in atomic orbitals. Your answer [1] 2 Which row gives the correct trends for the following properties of Group 2 elements and compounds going down the Group? F...

OCR A Level Chemistry B (Salters) H433/02 Scientific literacy in chemistry 1 Portland cement is a powder that ‘sets’ to a strong solid when water is added. The cement is usually mixed with gravel so that it sets to make concrete. The typical ingredients of Portland cement are shown in the table. Ingredients (solids) % by mass CaO 61 – 67 SiO2 19 – 23 Al 2O3 2.5 – 6 Fe2O3 0 – 6 SO3 1.5 – 4.5 (a) Give the systematic name for Fe2O3. .....................................

OCR A A-Level Chemistry Paper 1 MS 2020. Oxford Cambridge and RSA Examinations GCE Chemistry A H432/01: Periodic table, elements and physical chemistry Advanced GCE Mark Scheme for November 2020 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technic...

(As level) OCR A chemistry 2020 depth paper & mark scheme Tuesday 13 October 2020 – Morning /6 R D

These contains homiletic fission summarised with all the exam required points , with easy and quick ways to remember points and a reader approachable format . These will be perfect to revise and memeorize easily . I got a 85 % for this chapter just by going through this twice . these will help you to get good grades . you will be able to save time will be able to perfectly prepare yourself for the examinations . really efficient , helpful and very easy to approach .Enjoy !

These notes are for the OCR Chemistry A specification from 2016 but can be used for other specifications as the content is very similar. Every topic is broken down so that anyone can read and understand the notes. The notes also include compulsory practicals and expected results. Diagrams are from OCR textbooks.

These notes are for the OCR Chemistry A specification from 2016 but can be used for other specifications as the content is very similar. Every topic is broken down so that anyone can read and understand the notes. The notes also include compulsory practicals and expected results. Diagrams are from OCR textbooks.

Detailed notes on A level Chemistry OCR A (2015) module 6. Covers every single specification point. A* study notes.