Breadth in chemistry - Study guides, Class notes & Summaries

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GCE AS Level Chemistry A H032/01: Breadth in chemistry Mark Scheme for June 2022. ANNOTATE ANSWER WITH TICKS AND CROSSES 1st curly arrow (from ANY alkene) Curly arrow from double bond to Br of Br–Br  DO NOT ALLOW partial charge on C=C 2nd curly arrow Correct dipole on Br–Br AND curly arrow for breaking of Br–Br bond  5 AO1.2 AO1.2 For curly arrows, ALLOW straight or snake-like arrows and small gaps (see examples): 1st curly arrow must • go to a Br atom of Br–Br AND ...

2 © OCR 2023 1 The increase in global population means there is a greater need for drinking water. (a) What is the correct term for drinking water? Tick () one box. Ground water Potable water Sea water Waste water [1] (b) One source of drinking water is salt water. Describe a process that separates water from salt water. ................................................................................................................................................... .................

2 © OCR 2023 1 Argon forms 1% of the air and is unreactive. Argon is used as a replacement for nitrogen when nitrogen is too reactive. (a) Argon is unreactive because it is in Group 0 of the Periodic Table. State one other property of argon. .............................................................................................................................................. [1] (b) Chlorine is very reactive. Argon is unreactive. Explain how the reactivity of these two elements a...

H032-01-Breadth in chemistry Mark Scheme -2023-2024

For answers marked by levels of response: Not applicable in F501 a. To determine the level – start at the highest level and work down until you reach the level that matches the answer b. To determine the mark within the level, consider the following Descriptor Award mark On the borderline of this level and the one below At bottom of level Just enough achievement on balance for this level Above bottom and either below middle or at middle of level (depending on number of marks available...

This is the final mark scheme

OCR GCE AS Level Chemistry A H032/01: Breadth in chemistry Mark Scheme for June 2022. (Electrostatic) attraction between oppositely charged OR + and – ions  1 AO1.1 ×1 Attraction is essential IGNORE references to metal and non-metal Mark SchemeJune 2022 20 (ii) Mg2+ shown alternately in FOUR circles  S 2– shown alternately in FOUR circles  2 AO1.2 ×2 ALLOW labels if seen outside circles provided it clear which circle the label applies to ALLOW 1 mark for Mg AND S s...

AS Level Chemistry A H032/01 Breadth in chemistry Question Paper and Marking Scheme 2019. SECTION A You should spend a maximum of 25 minutes on this section. Answer all the questions. 1 How many electrons are in a A 10 B 12 C 14 D 22 Your answer 24Mg2+ ion? [1] 2 What is the formula of chromium(III) sulfate? A Cr3SO4 B Cr(SO4)3

OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY QP