2 Relative mass

 

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2.1.1+2.1.2 atomic structure Page 1 - 2

Oxford Textbook Pages : 12 - 14

CGP Revision Guide Pages : 18 - 19

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Show Specification Ref : 2.1.1c, 2.1.1d, 2.1.1e

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Question 1 / 5

AQA Jan 2010 Paper 1 Q5 section b answer all questions in the spaces provided pmt areas outside the box will not be scanned for marking a mass spectrometer can be used to investigate the isotopes in an element a define the term relative atomic mass of an element marks extra space b element x has a relative atomic mass of identify the block in the periodic table to which element x belongs and give the electron configuration of an atom of element x calculate the number of neutrons in the isotope of x which has a mass number marks extra space question continues on the next page turn over wmp jan chem pmt areas outside the box will not be scanned for marking c the mass spectrum of element z is shown below use this spectrum to calculate the relative atomic mass of z giving your answer to one decimal place identify element z relative abundance m z marks extra space wmp jan chem pmt areas outside the box will not be scanned for marking d state how vaporised atoms of z are converted into z ions in a mass spectrometer state and explain which of the z ions formed from the isotopes of z in part c will be deflected the most in a mass spectrometer marks extra space e explain briefly how the relative abundance of an ion is measured in a mass spectrometer marks extra space turn over wmp jan chem
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Question 2 / 5

AQA Jan 2011 Paper 1 Q2 do not write outside the box a indium is in group in the periodic table and exists as a mixture of the isotopes in and in use your understanding of the periodic table to complete the electron configuration of indium s s p s p s d p mark b a sample of indium must be ionised before it can be analysed in a mass spectrometer b i state what is used to ionise a sample of indium in a mass spectrometer mark b ii write an equation including state symbols for the ionisation of indium that requires the minimum energy mark b iii state why more than the minimum energy is not used to ionise the sample of indium mark b iv give two reasons why the sample of indium must be ionised reason reason marks wmp jan chem do not write outside the box c a mass spectrum of a sample of indium showed two peaks at m z and m z the relative atomic mass of this sample of indium is c i give the meaning of the term relative atomic mass marks c ii use these data to calculate the ratio of the relative abundances of the two isotopes marks extra space d state and explain the difference if any between the chemical properties of the isotopes in and in difference in chemical properties explanation marks e indium forms a compound x with hydrogen and oxygen compound x contains indium and hydrogen by mass calculate the empirical formula of compound x marks turn over wmp jan chem
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Question 3 / 5

AQA Jun 2011 Paper 1 Q1 section a answer all questions in the spaces provided do not write outside the box mass spectrometry can be used to identify isotopes of elements a i in terms of fundamental particles state the difference between isotopes of an element mark a ii state why isotopes of an element have the same chemical properties mark b give the meaning of the term relative atomic mass marks extra space wmp jun chem do not write outside the box c the mass spectrum of element x has four peaks the table below gives the relative abundance of each isotope in a sample of element x m z relative abundance c i calculate the relative atomic mass of element x give your answer to one decimal place marks c ii use the periodic table to identify the species responsible for the peak at m z marks d suggest one reason why particles with the same mass and velocity can be deflected by different amounts in the same magnetic field mark e explain how the detector in a mass spectrometer enables the abundance of an isotope to be measured marks extra space turn over wmp jun chem do not write outside the box norgessaltpeter was the first nitrogen fertiliser to be manufactured in norway it has the formula ca no a norgessaltpeter can be made by the reaction of calcium carbonate with dilute nitric acid as shown by the following equation caco s hno aq ca no aq co g h o i in an experiment an excess of powdered calcium carbonate was added to cm of mol dm nitric acid a i calculate the amount in moles of hno in cm of mol dm nitric acid give your answer to significant figures mark a ii calculate the amount in moles of caco that reacted with the nitric acid give your answer to significant figures mark a iii calculate the minimum mass of powdered caco that should be added to react with all of the nitric acid give your answer to significant figures marks a iv state the type of reaction that occurs when calcium carbonate reacts with nitric acid mark wmp jun chem
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Question 4 / 5

AQA Jun 2013 Paper 1 Q1 section a answer all questions in the spaces provided do not write outside the box the mass spectrum of the isotopes of element x is shown in the diagram relative abundance m z a define the term relative atomic mass marks b use data from the diagram to calculate the relative atomic mass of x give your answer to one decimal place marks wmp jun chem do not write outside the box c identify the ion responsible for the peak at mark d identify which one of the isotopes of x is deflected the most in the magnetic field of a mass spectrometer give a reason for your answer isotope reason marks e in a mass spectrometer the relative abundance of each isotope is proportional to the current generated by that isotope at the detector explain how this current is generated marks f x and zn are different elements explain why the chemical properties of x and zn are different mark turn over wmp jun chem do not write outside the box a the hydrocarbon but ene c h is a member of the homologous series of alkenes but ene has structural isomers a i state the meaning of the term structural isomers marks a ii give the iupac name of the position isomer of but ene mark a iii give the iupac name of the chain isomer of but ene mark a iv draw the displayed formula of a functional group isomer of but ene mark wmp jun chem
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Question 5 / 5

AQA Jun 2016 Paper 1 Q1 section a answer all questions in the spaces provided do not write outside the box mass spectrometry is a technique that can be used to separate isotopes of an element in order to determine relative atomic mass a give the meaning of the term relative atomic mass marks b in a spectrometer isotopes are converted into ions that are separated by deflection and are then detected b i ions are deflected using mark tick one box an electric field an electron gun a magnetic field a potential difference b ii describe how the ions are detected marks wmp jun chem do not write outside the box c table gives the relative abundance of each isotope in the mass spectrum of a sample of silicon recorded using a high resolution mass spectrometer table m z relative abundance use the data to calculate a value for the relative atomic mass of this sample of silicon give your answer to decimal places marks d a second mass spectrum was recorded for the same sample of silicon the energy of the electrons from the electron gun was higher for this second spectrum state and explain one similarity and one difference between the two spectra marks similarity explanation difference explanation turn over wmp jun chem
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