Ib level a chemistry Study guides, Class notes & Summaries

IB Chemistry Unit 2 SL Latest Version Graded A+ Emission spectrum ️️An emission spectrum is produced when an atom moves from a higher to a lower level. The line emission spectrum of hydrogen provides evidence for __________________ which converge at _____________ ️️The line emission spectrum of hydrogen provides evidence for the existence of electrons in discrete energy levels which converge at higher energies. Continuous spectrum ️️All the colours / wavelengths present ...

A-level Chemistry Full A/A* Summary Notes on Periodicity, Group 2 and Halogens. (Alkaline Earth Metals and Group 7). AQA, OCR, WJEC Eduqas, Edexcel, Cambridge, GCSE, IB. Easy to understand. Typed Lecture Notes from a top student. Cheap and affordable.

GCSE CHEMISTRY F Foundation Tier Paper 2 Time allowed: 1 hour 45 minutes Materials For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. Do...

AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP2020. This question is about rates of reaction. 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 ...

GCSE CHEMISTRY H Higher Tier Paper 2 Time allowed: 1 hour 45 minutes Materials For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 TOTAL For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. Do not write ou...

GCSE CHEMISTRY H Higher Tier Paper 2 Time allowed: 1 hour 45 minutes Materials For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 TOTAL For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. Do not write ou...

GCSE CHEMISTRY F Foundation Tier Paper 2 Time allowed: 1 hour 45 minutes Materials For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. Do...

Answer all questions in the spaces provided. Do not write outside the box Coconut oil contains a triester with three identical R groups. This triester reacts with potassium hydroxide. . Complete the equation by drawing the structure of the other product of this reaction in the box. Name the type of compound shown by the formula RCOOK Give one use for this type of compound. [3 marks] Type of compound Use . The triester in coconut oil has a relative molecular mass, Mr = 638.0 In the ...

AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.This question is about rates of reaction. 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-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Version: 1.0 Final *JUN* IB/M/Jun23/E9 7405/1 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Monday 12 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use...