Oxidised number Study guides, Revision notes & Summaries
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CSP1501 Assignment 1 2024 (Solutions)
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CSP1501 Assignment 1 2024 (Solutions) 
 
Question 1 
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Question text 
Which one of the following options lists only inorganic compounds? 
a. 
Water, salts, gas 
b. 
Carbohydrates, protein, fats 
c. 
Salts, gas, carbohydrates 
d. 
Water, oxygen, carbon dioxide, electrolytes 
Clear my choice 
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Select the correct symbol for Dubnium 
a. 
Db 
b. 
D 
c. 
Dm 
d. 
Du 
Questio...
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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS.
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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY 
 ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS 
A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS. 
1	Which substance contains polar molecules? 
 
A	C2H4 
B	CO2 
C	NCl 3 
D	SF6 
Your answer	 	[1] 
 
 
2	What is the formula of silver carbonate? 
 
A	AgCO3 
B	Ag(CO3)2 
C	Ag2CO3 
D	Ag3CO3 
Your answer	 	[1] 
 
 
3	Which statement explains why ice is less dense than water? 
 
A	Hydrogen bonds are stronger in ice than in water. 
 
B	H...
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AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2022 *JUN227404201* IB/M/Jun22/E7 7404/2 For Examiner’s Use Question Mark 1
- Exam (elaborations) • 63 pages • 2023
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AQA 
AS 
CHEMISTRY 
7404/2 
Paper 2 Organic and Physical Chemistry 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E7 7404/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
Section B 
TOTAL 
Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
• the Periodic Table/Data Sheet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions...
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Edexcel iGCSE Chemistry, question and answer with rated solution
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Edexcel iGCSE Chemistry, question and answer with rated solution 
Experiment for Diffusion? 
1) HCl placed at one end of the test tube, ammonia solution at the other. 
2) Where they meet, a ring of Ammonium Chloride appears. 
3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. 
 
 
 
Experiment for Dilution? 
1) Put a coloured substance in a solvent e.g food colouring in water. 
2) Over the time, the colour le...
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OCR AS LEVEL CHEMISTRY A HO32/02 DEPTH IN CHEMISTRY ORIGINAL EXAM V2 2024 WITH ACCURATE QUESTIONS AND ANSWERS FOR A+ GRADE CHECK THE LAST PAGE FOR ANSWERS
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OCR AS LEVEL CHEMISTRY A HO32/02 DEPTH IN CHEMISTRY 
ORIGINAL EXAM 2024 WITH ACCURATE QUESTIONS AND ANSWERS FOR A+ GRADE 
CHECK THE LAST PAGE FOR ANSWERS 
1	Group 2 elements are metals that react with oxygen and water. 
 
(a)	Magnesium is oxidised when it burns in oxygen to form an ionic compound. 
 
(i)	Write the electron configuration, in terms of sub-shells, of a magnesium atom. 
 
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OCR GCE AS Level Chemistry A H032/01: Breadth in chemistry Mark Scheme for June 2022
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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...
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AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE.
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AQA A LEVEL Chemistry QUESTIONS AND ANSWERS LATEST TOP SCORE. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Relative atomic mass - ANS.The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 
 
Relative molecular mass - ANS.Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom 
 
The Avogradro constant - ANS.the number of particles in a mole 
 
ideal gas equation - ANS.pV = nRT 
 
empirical formula - ANS.the simplest whole number ...
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Edexcel A-level biology 2023 with complete solutions questions and answers
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Describe the events of fertilisation that occur after the acrosome reaction. 
-Membrane of sperm and egg cell fuse together 
-cortical granules release contents into zona pellucida 
-Zona pellucida thickens 
-Haploid nuclei fuse 
 
 
 
Explain how phospholipids form a cell surface membrane 
-Hydrophilic parts associate with water 
-Hydrophobic parts repel water 
-a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer 
 
 
 
Describe the role of the CFTR protein in e...
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OCR AS LEVEL CHEMISTRY A H032/02 DEPTH IN CHEMISTRY ACTUAL 2024 EXAM V1 ACCURATE QUESTIONS AND ANSWERS 100% COMPLETE CHECK THE LAST PAGE FOR ANSWERS
- Exam (elaborations) • 30 pages • 2023
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OCR AS LEVEL CHEMISTRY A H032/02 DEPTH IN CHEMISTRY 
ACTUAL 2024 EXAM V1 
ACCURATE QUESTIONS AND ANSWERS 100% COMPLETE 
CHECK THE LAST PAGE FOR ANSWERS 
1	This question is about nickel and its compounds. 
(a)	Nickel reacts with dilute hydrochloric acid in a redox reaction. Ni(s) + 2HCl (aq)	NiCl 2(aq) + H2(g) 
Explain, in terms of the number of electrons transferred, whether nickel is oxidised or reduced. 
 
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Mark Scheme (Results) Summer 2022 Pearson Edexcel International GCSE In Chemistry (4CH1) Paper 2CR
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Question 
number Answer Notes Marks 
1 (a) (i) P neutron 3 
Q proton 
R electron 
(ii) nucleus ALLOW nuclei 1 
(b) boron ALLOW B 1 
Total 5 
Question 
number Answer Notes Marks 
2 (a) M1 dissolving 
M2 diffusion 
Answers can be in 
either order 
IGNORE dilution 
2 
(b) (i) A 3 1 
B is incorrect as there are not 4 different types of atoms 
in KMnO4 
C is incorrect as there are not 6 different types of atoms 
in KMnO4 
D is incorrect as there are not 7 different types of atoms 
in KMnO4 
(ii) (Mr ...
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