Ocr as level chemistry b Study guides, Class notes & Summaries

OCR A Level Chemistry Paper 1 (H432/01) Periodic table, Elements and physical chemistry Mark Scheme June 2023. FIRST CHECK THE ANSWER ON ANSWER LINE If answer = –1872 award 2 marks ----------------------------------------------------------------- H lattice = 2(+ 296) – 965 – 503 – 180 + 2(–107)– 602 H lattice = –1872 (kJ mol–1 ) 2 AO2.2 2 ALLOW for 1 mark +1872 (wrong sign on answer) Common errors for 1 mark –3056 (–296 x 2 instead of 296 x2) –2168 (2...

OCR AS LEVEL Chemistry B (Salters) H033/01 JUNE 2022 FINAL MARK SCHEME > Foundations of chemistry

OCR AS LEVEL CHEMISTRY B PAPER 2 MARKSCHEME.

OCR AS LEVEL CHEMISTRY B (SALTERS)H033/01 FOUNDATIONS OF CHEMISTRY LATEST ACTUAL EXAM WITH EXACT QUESTIONS AND CORRECT VERIFIED ANSWERS|A GRADED

OCR AS LEVEL Chemistry B H033/02 JUNE 2022 FINAL MARK SCHEME >Chemistry in depth.

ocr AS Level Chemistry B (Salters) H033-01 May2023 Question Paper.

1 Catalytic cracking of hydrocarbons is carried out in the petrochemical industry. Hot vaporised hydrocarbons and a powdered catalyst are fed into the bottom of a tube and forced upwards by steam. (a) (i) Decane, C10H22, can be cracked to give an alkene with four carbon atoms and another alkane. Write a chemical equation for this reaction using molecular formulae. [1] (ii) 2,2,3-Trimethylheptane is an isomer of decane. Draw the skeletal formula of 2,2,3-trimethylheptane. ...

OCR AS LEVEL CHEMISTRY B (SALTERS) H033/01 FOUNDATIONS OF CHEMISTRY ACTUAL 2024 COMPLETE EXAM V1 WITH ACCURATE ANSWERS A+ GRADE ASSURED.CHECK LAST PAGE FOR ANSWERS 1 What is the outer subshell electron configuration of an element in Group 16 of the Periodic Table? A p4 B p5 C p6 D p16 Your answer [1] 2 Geiger and Marsden fired α-particles at a gold foil. What happened in their experiment? A The α-particles were scattered randomly. B Most α-particles passed through unde...

OCR AS LEVEL CHEMISTRY B PAPER 1 MARKSCHEME

Ocr As Level Chemistry B-paper-2-june-2022-questions-only