Electrolyse - Samenvattingen, Aantekeningen en Examens

How is aluminium extracted from the ore? - correct answer electrolysis What is an aluminium ore called? - correct answer bauxite Why is it not practical to electrolyse pure aluminium oxide? - correct answer it uses a lot of energy as the melting point is so high How is the melting point of aluminium oxide reduces? - correct answer by dissolving aluminium oxide in cryolite Write a balanced equation for the electrolysis of AlO: - correct answer 2Al2O3 = 4Al + 3O2 Write the equations...

High Giant ionic structures melting point/ boiling point Closely packed lattice arranged by the attraction between oppositely charged ions Giant ionic structures structure The electrostatic attraction between oppositely charged ions is very strong so requires a lot of energy to overcome Why do giant ionic structures have high mps/bps? The stronger the forces of attraction The higher the charges of the ions in a giant ionic structure ... 4 How many other atoms is ...

Pearson Edexcel Merged Question Paper + Mark Scheme (Results) Summer 2022 Pearson Edexcel GCSE In Combined Science (1SC0) Paper 1CH Centre Number Candidate Number *P69480A0120* Turn over Total Marks Candidate surname Other names Please check the examination details below before entering your candidate information Paper reference   You must have: Calculator, ruler Pearson Edexcel Level 1/Level 2 GCSE (9–1) P69480A ©2022 Pearson Education Ltd. Q:1/1/ Instructions •...

Pearson Edexcel Merged Question Paper + Mark Scheme (Results) Summer 2022 Pearson Edexcel GCSE In Combined Science (1SC0) Paper 1CF Centre Number Candidate Number *P69481A0120* Turn over Total Marks Candidate surname Other names Please check the examination details below before entering your candidate information Paper reference   P69481A ©2022 Pearson Education Ltd. Q:1/1/ Pearson Edexcel Level 1/Level 2 GCSE (9–1) You must have: Calculator, ruler Time 1 hour 10 mi...

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