Aqa as level chemistry paper 2 Study guides, Class notes & Summaries

MARK SCHEME – GCSE CHEMISTRY – 8462/1F – JUNE 2021 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that every assoc...

Answer all questions in this section. box This question is about rates of reaction. Potassium manganate(VII), KMnO4, reacts with sodium ethanedioate, Na2C2O4, in the presence of dilute sulfuric acid. 2 MnO –(aq) + 16 H+(aq) + 5 C O 2–(aq)  2 Mn2+(aq) + 8 H O(l) + 10 CO (g) The reaction mixture is purple at the start and goes colourless when all the MnO –(aq) ions have reacted. The rate of reaction can be measured as 1000 where t = the time taken for the mixture...

AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry 2020 QP. Phosphinate ions (H2PO2 – ) react with hydroxide ions to produce hydrogen gas as shown. H2PO2 – + OH− → HPO3 2– + H2 A student completed an experiment to determine the initial rate of this reaction. The student used a solution containing phosphinate ions and measured the volume of hydrogen gas collected every 20 seconds at a constant temperature. Figure 1 shows a graph of the student’s results.

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020. GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020 Version: 1.0 Final Mark Scheme *206g8464c2h/MS* MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H – JUNE 20 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at ...

Practical handbook for A-level Biology Version 1.3 AQA Education (AQA) is a registered charity (number ) and a company limited by guarantee registered in England and Wales (number ). Our registered address is AQA, Devas Street, Manchester M15 6EX. This is the Biology version of the Practical handbook. Sections J to P are particularly useful for students and could be printed as a student booklet by schools. The informat...

GCSE COMBINED SCIENCE: TRILOGY 8464/C/1H Chemistry Paper 1H Mark scheme June 2020 Version: 1.0 Final Mark Scheme MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/1H – JUNE 2020 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in ...

GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020 Version: 1.0 Final Mark Scheme MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H – JUNE 2020 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in ...

Glossary of exam command words Calculate/ Determine use maths to work out the answer Choose circle the answer from the selection Compare what the similarities and differences are Complete fill in the gaps - pay attention to any given words, some may be used more than once some not at all Define what does the word mean? Describe what it looks like, or recall an event or process Design/ Plan something Draw a scientific diagram, not an arty sketch Estimate give a sensible guess Evaluate...