- Study guides, Class notes & Summaries

Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 1CR Mark Scheme Summer 2024

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16 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Question number Answer Notes Marks 1 (a) Description Substance a good conductor of electricity lithium an element that is a liquid at room temperature bromine a substance that can be used to form a polymer ethene an element that forms a basic oxide lithium a substance that has a giant covalent structure diamond ALLOW Li ALLOW Br/Br2 REJECT Br− ALLOW C2H4 ALLOW Li 5 (b) A descript...

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18 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 2CR Mark Scheme Summer 2024

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13 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 2C Mark Scheme Summer 2024

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13 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 1C Mark Scheme Summer 2024

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18 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 1C ,1CR ,2C and 2CR Mark Scheme JUNE 2024

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4 items

HIGHQUALITYEDEXCELSOLUTIONS

Question number Answer Notes Marks 1 (a) (i) B (3) A is not the correct answer because sulfur is not in period 2 C is not the correct answer because sulfur is not in period 4 D is not the correct answer because sulfur is not in period 6 1 (ii) D (2−) A is not the correct answer because the charge on a sulfide ion is not 1+ B is not the correct answer because the charge on a sulfide ion is not 2+ C is not the correct answer because the charge on a sulfide ion...

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13 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Question number Answer Notes Marks 1 (a) (i) sulfur ALLOW S 1 (ii) beryllium ALLOW Be 1 (iii) boron ALLOW B 1 (iv) 2,8,4 / 2.8.4 ACCEPT diagram showing electron configuration 1 (b) An explanation that links the following three points 3 M1 the outer shell is further from the nucleus in sodium/sodium has more shells/sodium has a larger atomic radius ORA ALLOW a sodium atom is larger than a lithium atom AL...

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13 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS

Question number Answer Notes Marks 1 (a) (i) W 1 (ii) V 1 (iii) Z 1 (b) (i) the number of protons (in the nucleus) IGNORE reference to electrons ALLOW amount of protons 1 (ii) (the sum of) the number of protons and neutrons (in the nucleus) ALLOW amount of protons and neutrons 1 total for question = 5 Question number Answer Notes Marks 2 (a) oxygen ALLOW O2 1 (b) M1 carbon dioxide / C...

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16 pages

Written in 2024/2025

Grade A+

HIGHQUALITYEDEXCELSOLUTIONS