+ 3H 2 2NH 3. Complete the sentence. [1 mark] The forward reaction is exothermic, so the reverse reaction is. ). Relative atomic masses (A r

Size: px
Start display at page:

Download "+ 3H 2 2NH 3. Complete the sentence. [1 mark] The forward reaction is exothermic, so the reverse reaction is. ). Relative atomic masses (A r"

Transcription

1 2 6 This question is about ammonia and fertilisers. 6 (a) Ammonia is produced by a reversible reaction. The equation for the reaction is: N 2 + 3H 2 2NH 3 Complete the sentence. The forward reaction is exothermic, so the reverse reaction is. 6 (b) Calculate the percentage by mass of nitrogen in ammonia (NH 3 ). Relative atomic masses (A r ): H = 1; N = 14 You must show how you work out your answer. [3 marks] Percentage by mass of nitrogen = % (2)

2 21 6 (c) A neutral solution can be produced when ammonia reacts with an acid. 6 (c) (i) Give the ph of a neutral solution. ph 6 (c) (ii) Which of these ionic equations shows a neutralisation reaction? Tick ( ) one. H + + OH H 2 O NH OH NH 4 OH H + + Cl HCl H + + H 2 O H 3 O + 6 (c) (iii) Name the salt produced when ammonia reacts with hydrochloric acid. Question 6 continues on the next page Turn over (21)

3 22 6 (d) In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate. Farmers use ammonium nitrate as a fertiliser for crops. Rainwater dissolves ammonium nitrate in the soil. Some of the dissolved ammonium nitrate runs off into rivers and lakes. Figure 12 shows three graphs A, B and C. The graphs show information about the use of ammonium nitrate as a fertiliser. A hectare is a measurement of an area of land. 95 Figure 12 Graph A 9 Crop yield in kg per hectare Mass of ammonium nitrate in kg per hectare Graph B 5 Profit in per hectare Mass of ammonium nitrate in kg per hectare Graph C 5 Mass of ammonium nitrate running off in kg per hectare Mass of ammonium nitrate in kg per hectare 5 (22)

4 23 Suggest how much ammonium nitrate farmers should use per hectare. Give reasons for your answer. Use information from graphs A, B and C. [6 marks] Extra space 13 END OF QUESTIONS (23)

5 MARK SCHEME GCSE CHEMISTRY CH2FP JUNE 216 Question Answers Extra information Mark AO / SpecRef 6(a) endothermic 1 AO d 6(b) 82 (%) correct answer with working gains 3 marks if 17 or 34 not shown in working max 2 marks accept 82.4 accept to full calculator display ( ) correctly rounded to at least 2 sf 3 AO a, 2.3.1f if no answer or incorrect answer, then (M r =) 17 gains 1 mark or 14/17 gains 2 marks OR (2M r =) 34 gains 1 mark or 28/34 gains 2 marks OR 14/their M r shown gains 1 mark or correct calculation of 14/their M r gains 2 marks 6(c)(i) 7 / seven 1 AO d 6(c)(ii) H + + OH - H 2 O 1 AO e 6(c)(iii) ammonium chloride allow NH 4 Cl ignore an incorrect formula 1 AO b Question 6 continues on the next page 11 of 12

6 MARK SCHEME GCSE CHEMISTRY CH2FP JUNE 216 Question 6 continued Question Answers Extra information Mark AO / SpecRef 6(d) 6 2AO2 / 4AO3 Marks awarded for this answer will be determined by the Quality of Written 2.6.2c Communication (QWC) as well as the standard of the scientific response. Examiners should also refer to the information on page 5 and apply a best-fit approach to the marking. marks Level 1 (1 2 marks) Level 2 (3 4 marks) Level 3 (5 6 marks) No relevant content. Suggestion with a reference to a graph. Suggestion with reasons referring to more than one graph. Suggestion with reasons from all three graphs, and linking of ideas which may explain a compromise. Examples of chemistry points made in response: A reasonable suggested amount of fertiliser would be in the region of 2 kg (per ha). Accept any suggestion from about 18 kg (per ha) to 5 kg (per ha). Yield: Using fertiliser improves yield. Yield improved most up to about 2 kg (per ha) of fertiliser. Yield only increased slightly above about 2 kg (per ha). Profit: About 2 kg of fertiliser gives the most profit. Above about 2 kg (per ha) of fertiliser profit declines. Run off: Run off is at low levels until about 3 kg (per ha) of fertiliser. Above about 3 kg (per ha) of fertiliser, run off increases. Examples of linking of ideas: Overall 2 kg gives high crop yield and most profit. In conclusion 2 kg gives high crop yield and low run off. 2 kg gives most profit and low run off. Examples of compromise: Profits go down after about 2 kg (per ha) of fertiliser because cost of fertiliser is not covered by increased yield. 2 kg gives the highest profit although it is not the highest yield. 5 kg gives the best yield but has the most runoff. Total of 12

GCSE ADDITIONAL SCIENCE CHEMISTRY

GCSE ADDITIONAL SCIENCE CHEMISTRY Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature GCSE ADDITIONAL SCIENCE CHEMISTRY Foundation Tier Unit Chemistry C2 F Wednesday 15 June 2016

More information

GCSE Additional Science / Chemistry

GCSE Additional Science / Chemistry GCSE Additional Science / Chemistry CH2HP Mark scheme 4408 / 4402 June 206 Version/Stage:.0 Final Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions,

More information

AQA Additional Science - Exothermic and Endothermic reactions (30 marks)

AQA Additional Science - Exothermic and Endothermic reactions (30 marks) AQA Additional Science - Exothermic and Endothermic reactions (30 marks) 1. A chemical reaction involves the transfer of: (Circle the correct answer) A. Atoms B. Energy C. Chemicals D. Mass ( 1 mark) 2.

More information

Answer all questions in the spaces provided. 1 The diagrams show the sub-atomic particles in four different atoms.

Answer all questions in the spaces provided. 1 The diagrams show the sub-atomic particles in four different atoms. 2 Answer all questions in the spaces provided. 1 The diagrams show the sub-atomic particles in four different atoms. Atom A Atom B Atom C Atom D Use the Chemistry Data Sheet to help you to answer these

More information

Acids, Bases, Salts. Specification points. Year 10/Year 11, Acids, Bases, Salts recaps year 9 work on this topic

Acids, Bases, Salts. Specification points. Year 10/Year 11, Acids, Bases, Salts recaps year 9 work on this topic Acids, Bases, Salts Specification points Year 0/Year, Acids, Bases, Salts recaps year 9 work on this topic Reactions of acids know how to write and predict the products when given reactants for the following

More information

The word equation shows the reaction between anhydrous cobalt chloride and water.

The word equation shows the reaction between anhydrous cobalt chloride and water. 1 The word equation shows the reaction between anhydrous cobalt chloride and water. anhydrous cobalt chloride (blue) + water hydrated cobalt chloride (pink) (a) Name the type of reaction shown by the sign

More information

General Certificate of Secondary Education Additional Science 4408 / Chemistry 4402 CH2FP Unit Chemistry Mark Scheme

General Certificate of Secondary Education Additional Science 4408 / Chemistry 4402 CH2FP Unit Chemistry Mark Scheme Version : 5/08/202 General Certificate of Secondary Education Additional Science 4408 / Chemistry 4402 Unit Chemistry 2 Mark Scheme 202 examination June series Mark schemes are prepared by the Principal

More information

Name: C4 TITRATIONS. Class: Question Practice. Date: 97 minutes. Time: 96 marks. Marks: GCSE CHEMISTRY ONLY. Comments:

Name: C4 TITRATIONS. Class: Question Practice. Date: 97 minutes. Time: 96 marks. Marks: GCSE CHEMISTRY ONLY. Comments: C4 TITRATIONS Question Practice Name: Class: Date: Time: 97 minutes Marks: 96 marks Comments: GCSE CHEMISTRY ONLY Page of 3 Sodium hydroxide neutralises sulfuric acid. The equation for the reaction is:

More information

1 A. That the reaction is endothermic when proceeding in the left to right direction as written.

1 A. That the reaction is endothermic when proceeding in the left to right direction as written. 1 Q. If Δ r H is positive, what can you say about the reaction? 1 A. That the reaction is endothermic when proceeding in the left to right direction as written. 2 Q If Δ r H is negative, what can you say

More information

Additional Science. Chemistry CH2FP. (Jun15CH2FP01) General Certificate of Secondary Education Foundation Tier June 2015.

Additional Science. Chemistry CH2FP. (Jun15CH2FP01) General Certificate of Secondary Education Foundation Tier June 2015. Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark Additional Science Unit Chemistry C2 Chemistry Unit Chemistry C2 Thursday 14

More information

Write down everything that the word equation tells you about the reaction (Total 4 marks)

Write down everything that the word equation tells you about the reaction (Total 4 marks) Q1. Here is a word equation for a chemical reaction. copper oxide + sulphuric acid copper sulphate + water Write down everything that the word equation tells you about the reaction.......... (Total 4 marks)

More information

(a) Bleach can be made by reacting chlorine with cold aqueous sodium hydroxide. A solution of bleach contains the chlorate compound NaClO. ...

(a) Bleach can be made by reacting chlorine with cold aqueous sodium hydroxide. A solution of bleach contains the chlorate compound NaClO. ... 1 The chlor-alkali industry is an important part of the UK chemical industry. The raw material is brine, a concentrated aqueous solution of sodium chloride, NaCl(aq). Two products that can be manufactured

More information

Q1. As the world population increases there is a greater demand for fertilisers.

Q1. As the world population increases there is a greater demand for fertilisers. Q1. As the world population increases there is a greater demand for fertilisers. (a) Explain what fertilisers are used for............. (b) The amount of nitrogen in a fertiliser is important. How many

More information

THEORIES OF ACIDS AND BASES

THEORIES OF ACIDS AND BASES THEORIES OF ACIDS AND BASES These notes describe the Arrhenius, and Bronsted-Lowry, theories of acids and bases, and explains the relationships between them. It also explains the concept of a conjugate

More information

(a) Complete Figure 9 by placing one tick in each row to show whether the salt is soluble or insoluble. salt soluble insoluble.

(a) Complete Figure 9 by placing one tick in each row to show whether the salt is soluble or insoluble. salt soluble insoluble. 1 The method used to prepare a salt depends on its solubility in water. (a) Complete Figure 9 by placing one tick in each row to show whether the salt is soluble or insoluble. ammonium chloride salt soluble

More information

Which fertiliser would improve the quality of this soil most effectively?

Which fertiliser would improve the quality of this soil most effectively? 1 farmer s soil is very low in both nitrogen (N) and phosphorus (P). Which fertiliser would improve the quality of this soil most effectively? 2 Which compound is not used as a fertiliser? ammonium sulfate

More information

... [1] (ii) Draw a dot-and-cross diagram to show the bonding in NH 3

... [1] (ii) Draw a dot-and-cross diagram to show the bonding in NH 3 1 Chemists have developed models for bonding and structure which are used to explain different properties. (a) Ammonia, NH 3, is a covalent compound. Explain what is meant by a covalent bond. Draw a dot-and-cross

More information

Choose words from the list to complete the sentences below. In an atom, the particles with a negative charge are called...

Choose words from the list to complete the sentences below. In an atom, the particles with a negative charge are called... Q This question is about the structure of atoms (a) Choose words from the list to complete the sentences below electrons ions neutrons protons In an atom, the particles with a negative charge are called

More information

Quiz I: Thermodynamics

Quiz I: Thermodynamics Quiz I: Thermodynamics SCH4U_2018-2019_V2 NAME: (Total Score: / 30) Multiple Choice (12) 1. What can be deduced from the following reaction profile? A. The reactants are less stable than the products and

More information

Q1. Methane and oxygen react together to produce carbon dioxide and water.

Q1. Methane and oxygen react together to produce carbon dioxide and water. Chemistry C3 Higher Questions Part 2 Q1. Methane and oxygen react together to produce carbon dioxide and water. The methane gas will not burn in oxygen until a flame is applied, but once lit it continues

More information

The electrolysis of sodium chloride solution produces useful substances. covalent ionic non-metallic

The electrolysis of sodium chloride solution produces useful substances. covalent ionic non-metallic 1 The electrolysis of sodium chloride solution produces useful substances. (a) (i) Choose a word from the box to complete the sentence. covalent ionic non-metallic Electrolysis takes place when electricity

More information

In 1807 Davy did an electrolysis experiment to produce potassium. Davy first tried to electrolyse a solid potassium salt to produce potassium

In 1807 Davy did an electrolysis experiment to produce potassium. Davy first tried to electrolyse a solid potassium salt to produce potassium Q1. This question is about potassium. (a) Humphrey Davy was a professor of chemistry. In 1807 Davy did an electrolysis experiment to produce potassium. Davy first tried to electrolyse a solid potassium

More information

GCSE COMBINED SCIENCE: SYNERGY

GCSE COMBINED SCIENCE: SYNERGY GCSE COMBINED SCIENCE: SYNERGY Higher Tier Paper 3H H Specimen 2018 Time allowed: 1 hour 45 minutes Materials For this paper you must have: a ruler a calculator the periodic table (enclosed) the Physics

More information

Salt (sodium chloride) is added to many types of food. Sodium chloride is produced by reacting sodium with chlorine.

Salt (sodium chloride) is added to many types of food. Sodium chloride is produced by reacting sodium with chlorine. Q1.This question is about salts. (a) Salt (sodium chloride) is added to many types of food. Sodium chloride is produced by reacting sodium with chlorine. sodium + chlorine sodium chloride The diagram shows

More information

TOPIC 19 ANSWERS & MARK SCHEMES QUESTIONSHEET 1. ph AND K W

TOPIC 19 ANSWERS & MARK SCHEMES QUESTIONSHEET 1. ph AND K W QUESTIONSHEET 1 a) ph - lg [H + ] / lg 1 [H + ] b) Water ionises slightly as follows: H 2 O(l) ž H + (aq) + OH - (aq) [H + (aq)][oh - (aq)] K c [H 2 O(l)] Since the ionisation is very slight, we regard

More information

Suggest one improvement to step 2 to make sure all the salt is dissolved in the water. ...

Suggest one improvement to step 2 to make sure all the salt is dissolved in the water. ... Q1.Rock salt is a mixture of sand and salt. Salt dissolves in water. Sand does not dissolve in water. Some students separated rock salt. This is the method used. 1. Place the rock salt in a beaker. 2.

More information

Assessment Schedule 2016 Chemistry: Demonstrate understanding of chemical reactivity (91166)

Assessment Schedule 2016 Chemistry: Demonstrate understanding of chemical reactivity (91166) NCEA Level 2 Chemistry (91166) 2016 page 1 of 6 Assessment Schedule 2016 Chemistry: Demonstrate understanding of chemical reactivity (91166) Evidence Statement Q Evidence Achievement Merit Excellence ONE

More information

Charles D Winters/Science Photo Library. How can you tell that a chemical reaction is taking place?

Charles D Winters/Science Photo Library. How can you tell that a chemical reaction is taking place? Energy Changes Q1. The figure below shows magnesium burning in air. Charles D Winters/Science Photo Library (a) Look at the figure above. How can you tell that a chemical reaction is taking place? (b)

More information

CH3HP. (Jun15CH3HP01) General Certificate of Secondary Education Higher Tier June Unit Chemistry C3 TOTAL. Time allowed 1 hour

CH3HP. (Jun15CH3HP01) General Certificate of Secondary Education Higher Tier June Unit Chemistry C3 TOTAL. Time allowed 1 hour Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark Chemistry Unit Chemistry C3 Thursday 14 May 2015 For this paper you must have:

More information

IMADUDDIN SCHOOL Second Term Examination 2017

IMADUDDIN SCHOOL Second Term Examination 2017 Index Register Class number number Name IMADUDDIN SCHOOL Second Term Examination 2017 GRADE 9 CHEMISTRY 5070/02 Paper 2 Theory Nov 2017 TIME 1 hour 30 minutes INSTRUCTIONS TO CANDIDATES Write your name,

More information

Orchard School. New Document 1 Name: Class: Date: 129 minutes. Time: 126 marks. Marks: Comments: Page 1

Orchard School. New Document 1 Name: Class: Date: 129 minutes. Time: 126 marks. Marks: Comments: Page 1 New Document Name: Class: Date: Time: Marks: 29 minutes 26 marks Comments: Page Q. The ph scale is a measure of the acidity or alkalinity of a solution. (a) Solution Draw one line from each solution to

More information

GCSE ADDITIONAL SCIENCE

GCSE ADDITIONAL SCIENCE Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature GCSE ADDITIONAL SCIENCE Higher Tier Unit 5 H Friday 9 June 2017 Morning Time allowed: 1 hour

More information

Additional Science. Chemistry CH2FP. (Jun13CH2FP01) General Certificate of Secondary Education Foundation Tier June 2013.

Additional Science. Chemistry CH2FP. (Jun13CH2FP01) General Certificate of Secondary Education Foundation Tier June 2013. Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Additional Science Unit Chemistry C2 Chemistry Unit Chemistry C2 Monday 20 May 2013 General

More information

Fertilisers. Topic 12 National 5 Chemistry Summary Notes

Fertilisers. Topic 12 National 5 Chemistry Summary Notes Fertilisers LI 1 Topic 12 National 5 Chemistry Summary Notes Chemistry is extremely important to the future of food production. As the population of the world increases, more and more efficient ways of

More information

Question Answer Marks Guidance 1 (a) (K c = ) Square brackets are essential State symbols not required. IGNORE incorrect state symbols

Question Answer Marks Guidance 1 (a) (K c = ) Square brackets are essential State symbols not required. IGNORE incorrect state symbols Question Answer Marks Guidance 1 (a) (K c = ) [C H ] [H ] 3 [CH 4 ] (b) (i) amount of H = 3 0.168 = 0.504 (mol) 1 1 Square brackets are essential State symbols not required. IGNORE incorrect state symbols

More information

Assessment Schedule 2015 Chemistry: Demonstrate understanding of chemical reactivity (91166)

Assessment Schedule 2015 Chemistry: Demonstrate understanding of chemical reactivity (91166) NCEA Level 2 Chemistry (91166) 2015 page 1 of 6 Assessment Schedule 2015 Chemistry: Demonstrate understanding of chemical reactivity (91166) Evidence Statement Q Evidence Achievement Achievement with Merit

More information

THIS IS A NEW SPECIFICATION

THIS IS A NEW SPECIFICATION THIS IS A NEW SPECIFICATION ADVANCED SUBSIDIARY GCE CHEMISTRY A Atoms, Bonds and Groups F321 *CUP/T73721* Candidates answer on the question paper OCR Supplied Materials: Data Sheet for Chemistry A (Inserted)

More information

California Standards Test (CST) Practice

California Standards Test (CST) Practice California Standards Test (CST) Practice 1. Which element has properties most like those of magnesium? (a) calcium (b) potassium (c) cesium (d) sodium 5. Which pair of atoms will share electrons when a

More information

A group of students investigated the volume of gas produced.

A group of students investigated the volume of gas produced. Q1.Lithium carbonate reacts with dilute hydrochloric acid. A group of students investigated the volume of gas produced. This is the method used. 1. Place a known mass of lithium carbonate in a conical

More information

hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version 1.0

hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version 1.0 hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA)

More information

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia.

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. (a) Complete the word equation for the reaction that takes place in the first reaction vessel. ammonia +... nitrogen

More information

Year 10 Chemistry TRIPLE Learning Cycle 4 Overview Can a knowledge of atomic structure allow us to predict how elements will react with eachother?

Year 10 Chemistry TRIPLE Learning Cycle 4 Overview Can a knowledge of atomic structure allow us to predict how elements will react with eachother? Learning Cycle Overview: Year 10 Chemistry TRIPLE Learning Cycle 4 Overview Can a knowledge of atomic structure allow us to predict how elements will react with eachother? Commented [T1]: Good overarching

More information

CHM3X. General Certificate of Education Advanced Subsidiary Examination June AS Externally Marked Practical Assignment.

CHM3X. General Certificate of Education Advanced Subsidiary Examination June AS Externally Marked Practical Assignment. Centre Number Surname Candidate Number For Examiner s Use Total EMPA mark Other Names Candidate Signature Examiner s Initials General Certificate of Education Advanced Subsidiary Examination June 2010

More information

MOLES AND EQUATIONS. Answer all questions. Max 51 marks. Mark../51...% Grade. Paddington Academy 1

MOLES AND EQUATIONS. Answer all questions. Max 51 marks. Mark../51...% Grade. Paddington Academy 1 MOLES AND EQUATIONS Answer all questions Max 51 marks Name.. Mark../51...% Grade Paddington Academy 1 1. In the sixteenth century, a large deposit of graphite was discovered in the Lake District. People

More information

Naming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride

Naming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second

More information

CH3FP. (Jun15CH3FP01) General Certificate of Secondary Education Foundation Tier June Unit Chemistry C3 PMT. Time allowed 1 hour TOTAL

CH3FP. (Jun15CH3FP01) General Certificate of Secondary Education Foundation Tier June Unit Chemistry C3 PMT. Time allowed 1 hour TOTAL Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark A Chemistry Unit Chemistry C3 Thursday 14 May 2015 For this paper you must have:

More information

Page 2. Q1.In industry ethanol is produced by the reaction of ethene and steam at 300 C and 60 atmospheres pressure using a catalyst.

Page 2. Q1.In industry ethanol is produced by the reaction of ethene and steam at 300 C and 60 atmospheres pressure using a catalyst. Q1.In industry ethanol is produced by the reaction of ethene and steam at 300 C and 60 atmospheres pressure using a catalyst. The equation for the reaction is: C 2 H 4 (g) + H 2 O (g) C 2 H 5 OH (g) The

More information

GCSE Chemistry. CH3HP Mark scheme June Version/Stage: 1.0 Final

GCSE Chemistry. CH3HP Mark scheme June Version/Stage: 1.0 Final GCSE Chemistry CH3HP Mark scheme 4402 June 206 Version/Stage:.0 Final Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject

More information

(g) + 3H 2. (g) 2NH [2] State two changes to the reaction conditions which would increase the percentage of ammonia at equilibrium....

(g) + 3H 2. (g) 2NH [2] State two changes to the reaction conditions which would increase the percentage of ammonia at equilibrium.... 1 Ammonia is made by the Haber process. N 2 + 3H 2 2 The forward reaction is exothermic. Typical reaction conditions are: finely divided iron calyst, temperure 450 C, pressure 200 mospheres. (a) Explain

More information

How did JJ Thomson conclude that the mobile charged particle in the atom had a ( ) charge.

How did JJ Thomson conclude that the mobile charged particle in the atom had a ( ) charge. Name Veritas Class Period Chemistry: Final Exam Practice Problems The final exam will focus on material covered in the spring semester. However, note that much of the material learned early in the year

More information

GCSE Additional Science / Chemistry

GCSE Additional Science / Chemistry GCSE Additional Science / Chemistry CH2FP Final Mark scheme 4408 / 4402 June 207 Version/Stage: v.0 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions,

More information

CHERRY HILL TUITION EDEXCEL CHEMISTRY A2 PAPER 24 MARK SCHEME

CHERRY HILL TUITION EDEXCEL CHEMISTRY A2 PAPER 24 MARK SCHEME Chemistry Advanced Level Paper 1 (9CH0/01) Acceptable Answer Additional Guidance Mark 1(a) A = CaO(s) (1) B = CO 2 (g) (1) C = Ca(OH) 2 (aq)/(s) (1) D = CaCl 2 (aq) (1) E = CaCO 3 (s) (1) Allow Ca(HCO

More information

(i) The atomic number of an atom is the number of... (1) (ii) The mass number of an atom is the number of (1)

(i) The atomic number of an atom is the number of... (1) (ii) The mass number of an atom is the number of (1) This question is about atomic structure and elements. (a) Complete the sentences. (i) The atomic number of an atom is the number of... () The mass number of an atom is the number of... () (b) Explain why

More information

Give 6 different types of solutions, with an example of each.

Give 6 different types of solutions, with an example of each. Warm up (Jan 5) Give 6 different types of solutions, with an example of each. 1 Warm Up (Jan 6) 1. Write the reaction showing the dissolving of the following solids (be sure to note whether they are covalent

More information

Correct Answer Reject Mark. Correct Answer Reject Mark [ (2 x 110.5) + (2 x 285.8)] (1)

Correct Answer Reject Mark. Correct Answer Reject Mark [ (2 x 110.5) + (2 x 285.8)] (1) (a)(i) Correct Answer Reject Mark CH CHCHCH CO H O HOOC(CH ) 4COOH Hʅ f +09.9 0.5 85.8 994.3 / kj mol Sʅ / 78.7 97.6 69.9 50.0 J mol K - 4 values correct () marks 3 / values correct mark 0 / values correct

More information

CHEMISTRY 2b SUMMARY

CHEMISTRY 2b SUMMARY CHEMISTRY 2b SUMMARY Items in ITALLICS are HIGHER TIER NLY C2.4.1 RATES F REACTIN Speeding up, or slowing down, chemical reactions is important in everyday life and in industry The rate of a chemical reaction

More information

CHEMISTRY PAPER 1999

CHEMISTRY PAPER 1999 CHEMISTRY PAPER 1999 (One and a half hours) Answers to this paper must be written on the paper provided separately. You will NOT be allowed to write during the first 15 minutes. This time is to be spent

More information

Nitrogen and hydrogen are passed over iron to produce ammonia in the Haber Process.

Nitrogen and hydrogen are passed over iron to produce ammonia in the Haber Process. Q.(a) Nitrogen and hydrogen are passed over iron to produce ammonia in the Haber Process. Balance the equation for the reaction. N 2 + H 2 NH 3 What is iron used for in the Haber process? M.(a) N 2 + 3

More information

S4 CHEMISTRY SUMMARY NOTES

S4 CHEMISTRY SUMMARY NOTES S4 CHEMISTRY SUMMARY NOTES 1. The Mole One mole of a substance = GRAM FORMULA MASS e.g. H 2 SO 4 RAM from databook pg.7 2H 2 x 1 = 2 1S 1 x 32 = 32 4O 4 x 16 = 64 98g Mass = number of moles x Mass of 1

More information

C2 Revision Pack (Please keep this pack with you)

C2 Revision Pack (Please keep this pack with you) Name: C2 Revision Pack (Please keep this pack with you) Follow all the steps below... 1) Practice all the maths and working scientifically questions PRACTICE ALL THESE QUESTIONS! Maths and Science Skills

More information

Page 2. Q1.A student investigated the reactions of copper carbonate and copper oxide with dilute hydrochloric acid.

Page 2. Q1.A student investigated the reactions of copper carbonate and copper oxide with dilute hydrochloric acid. Q1.A student investigated the reactions of copper carbonate and copper oxide with dilute hydrochloric acid. In both reactions one of the products is copper chloride. (a) Describe how a sample of copper

More information

D. Ammonia can accept a proton. (Total 1 mark)

D. Ammonia can accept a proton. (Total 1 mark) 1. Which statement explains why ammonia can act as a Lewis base? A. Ammonia can donate a lone pair of electrons. B. Ammonia can accept a lone pair of electrons. C. Ammonia can donate a proton. D. Ammonia

More information

Q1. Ammonia is used in the production of fertilisers. The flow diagram shows the main stages in the manufacture of ammonia.

Q1. Ammonia is used in the production of fertilisers. The flow diagram shows the main stages in the manufacture of ammonia. Q1. Ammonia is used in the production of fertilisers. The flow diagram shows the main stages in the manufacture of ammonia. Study the flow diagram and then answer the questions. (a) What is the purpose

More information

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level *8243796847* CHEMISTRY 57/41 Paper 4 Alternative to Practical May/June 211 1 hour Candidates answer on

More information

Subject: Trends and Patterns Code: 2815/01 Session: January Year: 2004 Mark Scheme MAXIMUM MARK 45 Mark Scheme ADVICE TO EXAMINERS ON THE ANNOTATION OF SCRIPTS 1. Please ensure that you use the final version

More information

Q1. The diagram shows the apparatus for an experiment. Hydrated copper sulphate crystals were heated. They became anhydrous copper sulphate.

Q1. The diagram shows the apparatus for an experiment. Hydrated copper sulphate crystals were heated. They became anhydrous copper sulphate. Q1. The diagram shows the apparatus for an experiment. Hydrated copper sulphate crystals were heated. They became anhydrous copper sulphate. (a) Name a suitable piece of equipment to heat tube A.... (b)

More information

Rates of Reaction. Question Paper. Save My Exams! The Home of Revision. Exam Board. Page 1. Score: /249. Percentage: /100

Rates of Reaction. Question Paper. Save My Exams! The Home of Revision. Exam Board. Page 1. Score: /249. Percentage: /100 Rates of Reaction Question Paper Level Subject Exam Board Unit Topic Difficulty Level Booklet GCSE Chemistry AQA C2 Rates of Reaction Silver Level Question Paper Time Allowed: 249 minutes Score: /249 Percentage:

More information

[H+] M [OH-] M ph poh

[H+] M [OH-] M ph poh ph and poh Name: Date: Period: 1. What is ph a measure of? 2. What is the equation used for finding ph? 3. What is the equation that relates to ph and poh? 4. Complete the following table: (first one is

More information

CH3HP. (Jun14CH3HP01) General Certificate of Secondary Education Higher Tier June Unit Chemistry C3 PMT TOTAL. Time allowed 1 hour

CH3HP. (Jun14CH3HP01) General Certificate of Secondary Education Higher Tier June Unit Chemistry C3 PMT TOTAL. Time allowed 1 hour Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark Chemistry Unit Chemistry C3 Thursday 15 May 2014 For this paper you must have:

More information

COOH, and thioglycolic acid, HSCH 2. (a) Glycolic acid reacts with bases, such as aqueous sodium hydroxide, NaOH(aq), to form salts.

COOH, and thioglycolic acid, HSCH 2. (a) Glycolic acid reacts with bases, such as aqueous sodium hydroxide, NaOH(aq), to form salts. 1 Glycolic acid, HOCH 2 COOH, and thioglycolic acid, HSCH 2 COOH, are weak acids. (a) Glycolic acid reacts with bases, such as aqueous sodium hydroxide, NaOH(aq), to form salts. A student pipetted 25.0

More information

MARK SCHEME for the May/June 2010 question paper for the guidance of teachers 9701 CHEMISTRY

MARK SCHEME for the May/June 2010 question paper for the guidance of teachers 9701 CHEMISTRY UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Advanced Subsidiary Level and GCE Advanced Level MARK SCHEME for the May/June 200 question paper for the guidance of teachers 970 CHEMISTRY 970/33

More information

Figure 1. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer

Figure 1. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer Q1.Figure 1 shows the outer electrons in an atom of the Group 1 element potassium and in an atom of the Group 6 element sulfur. Figure 1 (a) Potassium forms an ionic compound with sulfur. Describe what

More information

The electronic structure of the atoms of five elements are shown in the figure below.

The electronic structure of the atoms of five elements are shown in the figure below. The electronic structure of the atoms of five elements are shown in the figure below. The letters are not the symbols of the elements. Choose the element to answer the question. Each element can be used

More information

Choose words from the list to complete the sentences below. In an atom, the particles with a negative charge are called...

Choose words from the list to complete the sentences below. In an atom, the particles with a negative charge are called... Q1 This question is about the structure of atoms (a) Choose words from the list to complete the sentences below electrons ions neutrons protons In an atom, the particles with a negative charge are called

More information

Questions for "Reaction Bingo" 1. The starting substances in a chemical reaction.

Questions for Reaction Bingo 1. The starting substances in a chemical reaction. Chemical Reactions Bingo, April 2011 1 Questions for "Reaction Bingo" 1. The starting substances in a chemical reaction. 2. A single compound gets broken apart in this type of reaction. (one of the 5 types

More information

C6 THE RATE AND EXTENT OF CHEMICAL CHANGE

C6 THE RATE AND EXTENT OF CHEMICAL CHANGE C6 THE RATE AND EXTENT OF CHEMICAL CHANGE Question Practice Name: Class: Date: Time: 2 minutes Marks: 206 marks Comments: HIGHER TIER Page of 73 A student investigated the rate of the reaction between

More information

Chapters 10 and 11 Practice MC

Chapters 10 and 11 Practice MC Chapters 10 and 11 Practice MC Multiple Choice Identify the choice that best completes the statement or answers the question. d 1. Which of the following best describes the rates of chemical reaction?

More information

The Characteristic Properties of Acids and Bases

The Characteristic Properties of Acids and Bases The haracteristic Properties of cids and ases Question Paper 1 Level IGSE Subject hemistry (0620/091) Exam oard ambridge International Examinations (IE) Topic cids, bases and salts Sub-Topic The characteristic

More information

Chemical Bonds; Ionic; Covalent; Mettalic

Chemical Bonds; Ionic; Covalent; Mettalic Chemical Bonds; Ionic; Covalent; Mettalic Mark Scheme Level GCSE (9-) Subject Chemistry Exam Board AQA Topic 4.2 Bonding Structure + Props Matter Sub-Topic Chemical Bonds; Ionic; Covalent; Mettalic Difficulty

More information

Trilogy Quantitative chemistry

Trilogy Quantitative chemistry Trilogy Quantitative chemistry Foundation revision questions Name: Class: Date: Time: 6 minutes Marks: 6 marks Comments: Page of 23 (a) Formulae and equations are used to describe chemical reactions. Aluminium

More information

Question Answer Mark Guidance 1 (a) Method 1: 100% OR (only) one product OR no waste 2 product OR addition (reaction)

Question Answer Mark Guidance 1 (a) Method 1: 100% OR (only) one product OR no waste 2 product OR addition (reaction) 1 (a) Method 1: 100% OR (only) one product OR no waste 2 product OR addition (reaction) ALLOW co-product or by-product for waste product Method 2: < 100% AND two products OR (also) produces NaBr OR (There

More information

Hess's Law. UNIT 3. Chemical Reactions. Enthalpy Revision. Hess's Law

Hess's Law. UNIT 3. Chemical Reactions. Enthalpy Revision. Hess's Law Hess's Law 1. Hess's law states that the enthalpy change for a chemical reaction is independent of the route taken. 2. Enthalpy changes can be calculated by application of Hess's law UNIT 3. Chemical Reactions

More information

Kinetics & Equilibrium Review Packet. Standard Level. 1. Which quantities in the enthalpy level diagram are altered by the use of a catalyst?

Kinetics & Equilibrium Review Packet. Standard Level. 1. Which quantities in the enthalpy level diagram are altered by the use of a catalyst? Kinetics & Equilibrium Review Packet Standard Level 1. Which quantities in the enthalpy level diagram are altered by the use of a catalyst? Enthalpy I II III Time A. I and II only B. I and III only C.

More information

Topic 5 National Chemistry Summary Notes. Acids and Alkalis

Topic 5 National Chemistry Summary Notes. Acids and Alkalis Topic 5 National Chemistry Summary Notes Acids and Alkalis Experiment Collect some samples of rain water LI 1 The ph Scale The ph scale is a continuous range of numbers from below 0 to above 14. Acids

More information

Choose words from the list to complete the sentences below. electrical heat light kinetic. an endothermic an exothermic a neutralisation a reduction

Choose words from the list to complete the sentences below. electrical heat light kinetic. an endothermic an exothermic a neutralisation a reduction Q1. The diagram shows some magnesium ribbon burning. (a) Choose words from the list to complete the sentences below. electrical heat light kinetic an endothermic an exothermic a neutralisation a reduction

More information

Save My Exams! The Home of Revision. For more awesome GCSE and A level resources, visit us at Atomic Structure.

Save My Exams! The Home of Revision. For more awesome GCSE and A level resources, visit us at   Atomic Structure. Atomic Structure Mark Scheme 2 Level IGCSE(9-) Subject Chemistry Exam Board Edexcel IGCSE Module Double Award (Paper C) Topic Principles of Chemistry Sub-Topic Atomic Structure Booklet Mark Scheme 2 Time

More information

The characteristic Properties of Acids and

The characteristic Properties of Acids and For more awesome GSE and level resources, visit us at www.savemyexams.co.uk/ The haracteristic Properties of cids and ases Question Paper Level Subject Exam oard Topic Sub-Topic ooklet O Level hemistry

More information

1 (a) Describe a chemical test which shows the presence of water. Describe how water is treated before it is supplied to homes and industry.

1 (a) Describe a chemical test which shows the presence of water. Describe how water is treated before it is supplied to homes and industry. 1 (a) Describe a chemical test which shows the presence of water. test... colour change if water is present...... [3] (b) How could you show that a sample of water is pure?...[1] (c) Describe how water

More information

Acid-Base Theory. In this lecture the theory of acids and bases will be present along with web sites which discuss acids and bases

Acid-Base Theory. In this lecture the theory of acids and bases will be present along with web sites which discuss acids and bases Acid-Base Theory In this lecture the theory of acids and bases will be present along with web sites which discuss acids and bases Lecture Outline: these questions should be answered in this lecture. What

More information

Example 1: m = 100mL = 100g T i = 25 o C T f = 38 o C ΔT = 13 o C c = 4.18 J / (g o C) Q =??? Molar Heat of Dissolutions

Example 1: m = 100mL = 100g T i = 25 o C T f = 38 o C ΔT = 13 o C c = 4.18 J / (g o C) Q =??? Molar Heat of Dissolutions Molar Heat of Dissolutions It is observed that when 8.0g of Lithium chloride (LiCl) at 25 o C is dissolved in 100mL of water inside a calorimeter the final temperature of the water is 38 o C. Questions:

More information

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia.

Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. Q1. The chart shows the processes involved in the manufacture of nitric acid from ammonia. (a) Complete the word equation for the reaction that takes place in the first reaction vessel. ammonia +... nitrogen

More information

PHYSICAL SCIENCES/ P2 1 SEPTEMBER 2015 CAPS CAPE WINELANDS EDUCATION DISTRICT

PHYSICAL SCIENCES/ P2 1 SEPTEMBER 2015 CAPS CAPE WINELANDS EDUCATION DISTRICT PHYSICAL SCIENCES/ P2 1 SEPTEMBER 2015 CAPE WINELANDS EDUCATION DISTRICT MARKS 150 TIME 3 hours This question paper consists of 15 pages and 4 data sheets. PHYSICAL SCIENCES/ P2 2 SEPTEMBER 2015 INSTRUCTIONS

More information

Assessment Schedule 2017 Chemistry: Demonstrate understanding of chemical reactivity (91166)

Assessment Schedule 2017 Chemistry: Demonstrate understanding of chemical reactivity (91166) NCEA Level 2 Chemistry (91166) 2017 page 1 of 6 Assessment Schedule 2017 Chemistry: Demonstrate understanding of chemical reactivity (91166) Evidence Statement Q Evidence Achievement Merit Excellence ONE

More information

Bullers Wood School. Chemistry Department. Transition to A Level Chemistry Workbook. June 2018

Bullers Wood School. Chemistry Department. Transition to A Level Chemistry Workbook. June 2018 Bullers Wood School Chemistry Department Transition to A Level Chemistry Workbook June 2018 This booklet contains questions for you to work through and answer over the summer to prepare for the A level

More information

Atoms, Elements, Atoms, Elements, Compounds and Mixtures. Compounds and Mixtures. Atoms and the Periodic Table. Atoms and the.

Atoms, Elements, Atoms, Elements, Compounds and Mixtures. Compounds and Mixtures. Atoms and the Periodic Table. Atoms and the. Atoms, Elements, Compounds and Mixtures Explain how fractional distillation can be used to separate a mixture. 1 Atoms, Elements, Compounds and Mixtures Fractional distillation is used to separate components

More information

H 2 SO 4. HCl. HNO 3 nitric acid. TOPIC: Acids and Bases. e.g. HCl! H + + Cl - sulphuric acid. hydrochloric acid

H 2 SO 4. HCl. HNO 3 nitric acid. TOPIC: Acids and Bases. e.g. HCl! H + + Cl - sulphuric acid. hydrochloric acid TOPIC: Acids and Bases Learn these formulae! H 2 SO 4 sulphuric acid HCl hydrochloric acid Acids, especially concentrated acids, are corrosive: you need eye protection and gloves. HNO 3 nitric acid What

More information

Types of Chemical Reactions

Types of Chemical Reactions Types of Chemical Reactions There are five types of chemical reactions: 1. Formation (combination) 2. Decomposition 3. Single Displacement 4. Double Displacement 5. Combustion 1 Formation (Combination)

More information

MARK SCHEME for the October/November 2015 series 0620 CHEMISTRY

MARK SCHEME for the October/November 2015 series 0620 CHEMISTRY CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International General Certificate of Secondary Education MARK SCHEME for the October/November 015 series 060 CHEMISTRY 060/ Paper (Extended Theory), maximum

More information

(iii) Use the diagram to determine the value (mol 2 dm 6 ) of K w at 50 C. [1]

(iii) Use the diagram to determine the value (mol 2 dm 6 ) of K w at 50 C. [1] 2. (a) The diagram shows the variation of the ionic product of water, K w, with temperature. 6 K w /10 14 mol 2 dm 6 Temperature/ C (i) Give the expression for the ionic product of water, K w. [1] (ii)

More information

The topics in this unit are:

The topics in this unit are: The topics in this unit are: 1 Uses of chemicals in industry 2 Acids and alkalis 1 3 Acids and alkalis 2 4 Neutralisation 5 Chemical synthesis 6 Percentage yield 7 Relative atomic mass 8 Relative formula

More information