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Page 1 Stockland Green School Stockland Green School Q1. The periodic table on the Data Sheet may help you to answer these questions. (a) Part of the periodic table is shown below. The letters are not the symbols of the elements. Choose your answers only from the letters shown in the periodic table above. Which letter, A, B, C, D, E or F, represents (i) aluminium (1) (ii) a Group 5 element (1) (iii) an alkali metal (1) (iv) the element with atomic (proton) number of 47 (1) Page 1 Stockland Green School (v) an element with seven electrons in its outer shell? (1) (b) The table shows the boiling points of the Group 7 elements. The elements are arranged in alphabetical order. Group 7 element Name Symbol Boiling point in °C Astatine At 337 Bromine 58 Chlorine Cl -34 Fluorine F -188 Iodine I 184 (i) The symbol for bromine is missing from the table. What is the symbol for bromine? Symbol = .............................. (1) (ii) Arrange these elements in order of decreasing boiling point. The first one and the last one have been done for you. At ............ ............ ............ F Highest boiling point Lowest boiling point (1) (c) The table shows some statements about Group 7 elements. Page 2 Stockland Green School Tick ( ) the two correct statements. Tick ( ) They are halogens. They are metals. They become less reactive down Group 7. They are compounds. (2) (Total 9 marks) Q2. The elements in Group 1 are known as the alkali metals. Which three of the following are properties of alkali metals? Place a tick ( ) in the box against each correct property. Hard, tough and strong Low density Form hydroxides that dissolve in water React quickly with water Used as catalysts Used to make electric cables (Total 3 marks) Q3. Platinum and gold can both be used to make wedding rings. Page 3 Stockland Green School By Jeff Belmonte from Cuiabá, Brazil (Flickr) [CC-BY-2.0], via Wikimedia Commons Use the Data Sheet to help you to answer these questions. (a) Draw a ring around the part of the periodic table in the list below to which platinum and gold belong. group 1 group 2 transition elements group 7 (1) (b) Platinum and gold have properties that make them suitable for wedding rings. Tick ( ) two of these properties. Property Tick ( ) These metals do not react with air. These metals have low melting points. These metals do not react with water. These metals have low densities. (2) (Total 3 marks) Page 4 Stockland Green School Q4. This question is about oxygen atoms. The periodic table on the Data Sheet may help you to answer this question. (a) (i) Oxygen atoms have 8 electrons. Complete the diagram to represent the arrangement of electrons in an oxygen atom. Use crosses (×) to represent the electrons. (1) (ii) Name the part of the oxygen atom that is labelled A on the diagram. ........................................................................................................................... (1) (b) Two isotopes of oxygen are oxygen-16 and oxygen-18. 16 18 O O 8 8 oxygen-16 oxygen-18 Explain, in terms of particles, how the nucleus of an oxygen-18 atom is different from the nucleus of an oxygen-16 atom. ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... (2) (Total 4 marks) Page 5 Stockland Green School Q5.In 1866 John Newlands produced an early version of the periodic table. Part of Newlands’ periodic table is shown below. Column 1 2 3 4 5 6 7 H Li Be B C N O F Na Mg Al Si P S Cl K Ca Cr Ti Mn Fe Newlands’ periodic table arranged all the known elements into columns in order of their atomic weight. Newlands was trying to show a pattern by putting the elements into columns. (a) Iron (Fe) does not fit the pattern in column 7. Give a reason why. ........................................................................................................................ ........................................................................................................................ (1) (b) In 1869 Dmitri Mendeleev produced his version of the periodic table. Why did Mendeleev leave gaps for undiscovered elements in his periodic table? ........................................................................................................................ ........................................................................................................................ (1) (c) Newlands and Mendeleev placed the elements in order of atomic weight. Complete the sentence. The modern periodic table places the elements in order of ............................................ (1) Page 6 Stockland Green School (d) Lithium, sodium and potassium are all in Group 1 of the modern periodic table. Explain why. ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ (2) (Total 5 marks) Q6. The diagrams show the electronic structure of four different atoms. Use the Chemistry Data Sheet to help you to answer these questions. (a) Name the two sub-atomic particles in the nucleus of an atom. ........................................................................................................................ (1) (b) Why is there no overall electrical charge on each atom? ........................................................................................................................ ........................................................................................................................ (1) (c) Why is Atom A unreactive? ........................................................................................................................ (1) Page 7 Stockland Green School (d) Which two of these atoms have similar chemical properties? Give a reason for your answer. ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ ........................................................................................................................ (2) (Total 5 marks) Page 8 Stockland Green School M1. (a) (i) B 1 (ii) E 1 (iii) F 1 (iv) D 1 (v) C 1 (b) (i) Br do not accept BR or br or bR ignore numbers allow written in table if answer blank 1 (ii) I Br Cl allow iodine, bromine, chlorine allow I,B,C allow capitals or lower case allow 184, 58, -34 ignore numbers 1 (c) they are halogens 1 they become less reactive down Group 7 Page 9 Stockland Green School 1 [9] M2. low density 1 form hydroxides that dissolve in water 1 react quickly with water four ticks – max 2 marks five ticks – max 1 mark all boxes ticked – 0 marks 1 [3] M3. (a) transition elements 1 (b) These metals do not react with air 1 These metals do not react with water 1 [3] M4. (a) (i) Page 10 Stockland Green School or 1 allow any arrangement of electrons on the shells accept o, x, - or e as representing electrons (ii) nucleus accept nucleus (protons plus neutrons) do not accept protons plus neutrons on its own allow nuclei / nucles / neucleus / phonetic spelling do not accept neutron 1 (b) it has 2 more neutrons or converse accept ‘it has more neutrons’ or ‘different number of neutrons’ for 1 mark ‘2 more protons / electrons + correct number of neutrons’ = max 1 mark or O-16 has 8 neutrons (1 mark)(*) O-18 has 10 neutrons (1 mark)(*) (*)if incorrectly calculated but shows more neutrons in 0-18 allow for 1 mark accept it has more particles or it has 2 more particles for 1 mark ignore any reference to charges just 2 more without reference to particles = 0 marks 2 [4] M5.(a) (iron) is a metal Page 11 Stockland Green School accept transition element allow (iron) had different properties (to oxygen and sulfur) ignore electrons 1 (b) so that elements with similar properties could be placed together allow to make the pattern fit ignore undiscovered elements 1 (c) atomic number(s) allow proton number(s) 1 (d) all have one electron in the outer shell (highest energy level) allow same number of electrons in the outer shell (highest energy level) 1 (so they) have similar properties or react in the same way allow specific reactions e.g. with water 1 [5] M6. (a) protons (and) neutrons both needed for 1 mark ignore p / + and n / 0 do not accept electrons 1 (b) because the number of protons is equal to the number of electrons allow protons and electrons balance / cancel out allow positive / + and negative / - balance / cancel out 1 Page 12 Stockland Green School (c) it = atom A because atom A has a full highest energy level or full outer shell allow all the shells are full or no incomplete shell or because atom A has a stable arrangement of electrons allow because atom A is in Group 0 / a noble gas 1 (d) (atom) B / lithium / Li (and) (atom) C / sodium / Na both needed for 1 mark 1 because they have the same number/one outer electron(s) linked to answer for first mark accept because both need to lose one / an electron allow because (atoms) B and C are in Group 1 / the same group / are alkali metals 1 [5] Page 13.
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