Chemistryhigher - Study guides, Class notes & Summaries

GCSE CHEMISTRYHigher Tier Paper 1 1 Soluble salts are formed by reacting metal oxides with acids. box 0 1 . 1 Give one other type of substance that can react with an acid to form a soluble salt. [1 mark] 0 1 . 2 Calcium nitrate contains the ions Ca2+ and NO3–Give the formula of calcium nitrate.[1 mark] 0 1 . 3 Describe a method to make pure, dry crystals of magnesium sulfate from a metal oxide and a dilute acid. 0 2 This question is about metals and metal compounds. box 0 2 . 1 Iron pyr...

This is the final mark scheme

1.a) Automobile air bags inflate by a rapid decomposition reaction. One typical compound used is guanidinium nitrate, C(NH2)3NO3, which decomposes very rapidly to form nitrogen, water vapour and carbon. Deduce the equation for the decomposition of guanidinium nitrate. [1] . C(NH2)3NO3 (s) → 2N2 (g) + 3H2O (g) + C (s) b) Calculate the total number of moles of gas produced from the decomposition of 10.0 g of guanidinium nitrate. [1] moles of gas = « 5× 10.0 g 122.11gmo l −1=¿...

GCSE CHEMISTRY H Higher Tier Paper 1 June 2023 Question paper

OCR GCSE Chemistry B J258_03 Breadth in chemistry (Higher) May 2024

OCR GCSE Chemistry B J258_04 Depth in chemistry (Higher) June 2024

IB ChemistryHigher Level Internal Assessment on the topic of Aspirin Hydrolysis and relation to carcinogenesis which received a score of 22/24 by my school and 20/24 by the IB), written by a student that received a 7 as a final subject grade and 44/45 as an over IB score.