KEEP IT SIMPLE SCIENCE

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1 KEEP IT SIMPLE SCIENCE Elements & Attention Techers KISS Resources for the Austrlin Curriculum - Science KISS topic number Topic 10.8C Science Understnding Strnd B = Biologicl Sciences Yer 8 Chemicl Sciences C = Chemicl Sciences E = Erth & Spce Sciences P = Physicl Sciences WORKSHEETS for KISS Worksheets re designed to consolidte students knowledge & understnding nd/or develop or prctice skill, such s grphing, clculting, reporting prc.work, etc. Some re suitble to issue s homework ssignments. Some cn be used s quick quiz. Yer level designtion in Nt.Curriculum In both the PhotoMster nd OnScreen resources, n informtion box (s shown) indictes the pproprite point for ech worksheet to be completed. Plese complete Worksheets 1 & 2 before going on. 3. KISS Worksheets re formtted for photocopying so tht they my be used s in-clss pper exercises, quiz tests or homework ssignments. They cn lso be converted for use s Microsoft Word TM documents, or with softwre llowing nnottions, (eg Microsoft OneNote TM ) or pps such s Notbility TM nd iannotte PDF TM in tblets & ipds. This llows KISS Worksheets to be completed by students in their computer, then submitted by emil, for exmple. Softwre titles underlined bove re registered trdemrks of Microsoft Corp., GingerLbs, Brnchfire Inc. Answer Section begins on p8 Suggested nswers to the Discussion / Activity pges ( OnScreen resources) re in seprte file in the folder for this topic. pge 1

2 KISS Resources for the Austrlin Curriculum - Science Mke your own Mind-Mp TITLE PAGE. Cut out the boxes. Sort them into n pproprite ly-out on pge of your workbook, then glue them down. Add connecting rrows nd colour in. Elements & v. Mixtures The Elements Prticles & Atoms Chemicl Chemicl Rections Physicl Chnges & Chemicl Chnges Metls & Non-Metls Introduction to the Periodic Tble for schools 2014 Mke your own Mind-Mp TITLE PAGE. Cut out the boxes. Sort them into n pproprite ly-out on pge of your workbook, then glue them down. Add connecting rrows nd colour in. Elements & v. Mixtures The Elements Prticles & Atoms Chemicl Chemicl Rections Physicl Chnges & Chemicl Chnges Metls & Non-Metls Introduction to the Periodic Tble pge 2

3 Worksheet 1 The Elements The ncient Greek, )... believed tht everything ws mde of 4 elements ; erth, ir, b)... nd... The im of Alchemy ws to turn ordinry metls into c)... nd to find chemicl which could mke person d)... While serching for these impossible chemicls, the lchemists discovered mny new chemicls nd invented equipment nd processes such s filtrtion nd e)... By lerning to brek chemicls down into the simplest prts ( f)... ) the true concept of chemicl element ws finlly discovered. Worksheet 2 Elements & Periodic Tble KISS Resources for the Austrlin Curriculum - Science Fill in the blnk spces. Student Nme... We now know there re bout g)... nturlly occurring elements. These re listed on the h)... Tble. Ech element hs its own unique i)... nd j)... number. An element cn be defined s substnce composed of toms which re k) It cn lso be defined s substnce which cnnot be l)... into nything simpler. Ech element s toms hve the sme number of m)... This number is equl to the n) shown on the Periodic Tble. Student Nme... Serch the Periodic Tble nd find the informtion to complete the tble Element Chemicl Atomic Number of Electrons Nme Symbol Number in ech tom Zinc Krypton for Ne B Fluorine 79 Am pge 3

4 Worksheet 3 Nmes of the Elements At lest 6 of the elements were nmed fter countries (or plces) of the world. Serch the Periodic Tble nd find Nme Atomic No KISS Resources for the Austrlin Curriculum - Science Student Nme... for 3. Some minerls hve been nmed becuse they contin lot of certin elements, or the element ws nmed fter being discovered in tht minerl. Cn you find them? About dozen elements hve been nmed in honour of fmous scientists. List 2 of these. (hint: very high tomic numbers) Minerl Element At. No. Clcite Fluorite Nme Atomic No. Beryl Worksheet 4 Clssifying the Elements Solid, Liquid or Gs? The vst mjority of the elements re solid t room temperture. About dozen re gses. Only 2 re liquids. (In Chemistry, room temperture is defined to be 25 o C) Use the informtion on the right, nd refer to Periodic Tble to list ll the elements which re liquids t room temperture. Atomic Number Nme Symbol Zircon Student Nme... Blck Shding = gses Grey Shding = liquids White Shding = solids Q2 (cont) Atomic Number Nme Symbol List ll the elements which re gses t room temperture. pge 4

5 Worksheet 5 Metls & Non-Metls Most of the elements re metls. They typiclly hve these properties: They re )... in ppernce. They re good b)... of both electricity nd c)... They re d)..., which mens they cn be flttened into sheets. They re e)..., which mens they cn be drwn out into wires. At room temperture, they re ll f)..., except the liquid metl g)... KISS Resources for the Austrlin Curriculum - Science Student Nme... In contrst, the non metls re generlly: h)... in ppernce. poor i)... of electricity. j)..., which mens they will shtter or snp if hmmered or stretched. Mny re solids, but there re lso mny k)... nd 1 liquid. In the l)... Tble, the non-metls re clustered in the m)... (top or bottom) n)... (left or right) Worksheet 6 Useful Elements We use the element copper for electricl wires. Which 2 typicl properties of metl mke it suitble for this use? Aluminium is fmilir to you in the form of luminium foil. Which property of metls llows thin sheets of luminium to be mde like this? Student Nme Silicon is n element used to mke silicon chips for computer circuits. Silicon is shiny, brittle nd semi-conductor of electricity. On blnce, should we clssify silicon s metl or non-metl? Explin. for 5. Helium is gs with such low density tht it cn mke blloons rise into the ir. ) Why do you think it hs such low density? 3. Pure iodine is solid non-metl, in the form of shiny, purple crystls. Wht do you expect to hppen if you were to tp it with hmmer? Explin. b) There is one other element which cn lso lift blloons. Nme it. c) Of these 2, helium is preferred. Find out why. pge 5

6 Worksheet 7 & Rections. A compound is formed when 2 or more )... combine. The toms re not just mixed but re chemiclly b)... together to form new prticle clled c)... The elements lwys combine in fixed d)... which is described by the chemicl e)... for tht compound. For exmple, H 2 O mens tht there re 2 toms of f)... nd 1 tom of g)... in ech molecule of h)... The properties of compound re usully i)... compred to the properties of the elements in the compound. For ech compound below, stte which elements re present, nd how mny toms of ech re in 1 molecule. The first one is done for you. KISS Resources for the Austrlin Curriculum - Science Student Nme... Fill in the blnk spces. When chemicl rection occurs, the toms remin the sme, but re j)... to form new substnces. The signs of chemicl chnge re tht: originl substnce(s) k)... new substnce(s) l)... This my show s chnge of m)..., or n)... of gs. the o)... chnges. re p)... substnces nd cnnot be seprted by ny q)... process. They cn be chemiclly split into r)... by the process of s)... for Worksheet 8 Student Nme... Chemicl Formuls. Physicl & Chemicl Chnges For ech chnge described, stte if it is physicl chnge, or chemicl chnge. ) melting ice... ) Wter, H 2 O contins: 2 toms of hydrogen & 1 tom of oxygen b) crbon dioxide, CO 2 contins: c) luminium chloride. AlCl 3 contins d) ethne, C 2 H 6 contins e) copper sulfte, CuSO 4 contins b) burning pper... c) grinding sugr to powder... d) collecting cler wter by filtering mud... e) decomposing slt to sodium nd chlorine... f) mixing two solutions which chnge colour nd form sediment... g) wter is heted so tht bubbles of stem form... h) wter is zpped with electricity so tht bubbles... of hydrogen nd oxygen form pge 6

7 Topic Test Elements & Answer ll questions in the spces provided. (8 mrks) True or Flse? (T or F?) ) Alchemy ws minly concerned with mking gold.... b) There re bout chemicl elements.... c) The toms of n element re ll the sme s ech other.... d) An element cn be chemiclly decomposed into simpler things.... e) Every metl is solid t room temperture.... f) Non-metls re found on the left side of the Periodic Tble.... g) A compound contins elements chemiclly bonded together.... h) cn be decomposed into elements.... KISS Resources for the Austrlin Curriculum - Science Student Nme... Score / (5 mrks) Give one word for: ) substnce which cnnot be seprted by ny physicl processes, but cn be decomposed chemiclly into simpler substnces. b) the generl nme for shiny, mlleble element which conducts electricity. c) substnce which cn be seprted into prts by physicl processes. d) the property of being ble to stretch substnce to form wires. e) substnce which cnnot be decomposed into ny simpler substnces. (6 mrks) ) The ncient Greek, Aristotle, believed tht everything ws composed of just 4 bsic substnces, or elements. Nme 2 of Aristotle s elements.... nd... b) If the toms of 2 different elements re represented by these symbols, use sketch to show: i) mixture of these elements. ii) compound of these elements. 4. (3 mrks) Answer ech prt by clerly mrking the blnk Periodic Tble s instructed. ) Write where you would find n element which is gs t room temperture. b) Rule stright line to show the pproximte dividing line between the metls nd the non-metls. Indicte on which side of the dividing line the metls re locted. c) Write c to show the loction of the element with Atomic Number = 1 c) List 2 things you might observe or mesure which indicte tht chemicl rection hs occurred. pge 7

8 Answer Section Worksheet 1 ) Aristotle b) fire nd wter c) gold d) immortl e) distilltion / crystlistion, etc f) decomposition g) 90 h) Periodic i) symbol j) Atomic k) identicl l) decomposed m) electrons n) Atomic Number Worksheet 2 Zinc Zn Krypton Kr Neon Ne Brium B Phosphorus P Tungsten W Sodium N Iodine I Fluorine F 9 9 Gold Au Americium Am Worksheet 3 Any 2 of Germnium (32), Frncium (87), Polonium (84), Europium (63), Americium (95), Clifornium (98) Curium (96) nd Einsteinium (99) re best known, but lso elements Clcium 20 Fluorine 9 Beryllium 4 Zirconium 40 KISS Resources for the Austrlin Curriculum - Science Worksheet 4 35 Bromine Br 80 Mercury Hg 1 Hydrogen H 2 Helium He 7 Nitrogen N 8 Oxygen O 9 Fluorine F 10 Neon Ne 17 Chlorine Cl 18 Argon Ar 36 Krypton Kr 54 Xenon Xe 86 Rdon Rn Worksheet 5 ) shiny b) conductors c) het d) mlleble e) ductile f) solids g) mercury h) dull (not shiny) i) conductors j) brittle k) gses l) Periodic m) top n) right Worksheet 6 ductile & electricl conductor mlleble for 3. It would shtter. Being non-metl it is brittle, not mlleble. 4. non-metl. Although it is shiny like metl, it is brittle nd not good conductor. 5. ) Its toms re very smll & light weight. b) Hydrogen c) Hydrogen is explosively inflmmble, so helium is much sfer to use. pge 8

9 Worksheet 7 ) elements b) bonded c) molecule d) rtio e) formul f) hydrogen g) oxygen h) wter i) totlly different j) re-rrnged k) dispper l) pper m) colour n) bubbles o) temperture p) pure q) physicl r) elements s) decomposition KISS Resources for the Austrlin Curriculum - Science Answer Section (cont.) Topic Test ) T b) F c) T d) F e) F f) F g) T h) T ) erth, ir, fire, wter (ny 2) b) i) (seprte, different prticles) Worksheet 8 ) 2 toms of hydrogen & 1 tom of oxygen b) 1 tom of crbon & 2 toms of oxygen c) 1 tom of luminium & 3 toms of chlorine d) 2 toms of crbon & 6 toms of hydrogen e) 1 tom of copper, 1 tom of sulfur & 4 toms of oxygen ) physicl b) chemicl c) physicl d) physicl e) chemicl f) chemicl g) physicl h) chemicl for ii) (identicl molecules, ech one mde of different toms bonded together) c) (ny 2) Originl substnce(s) dispper. New substnce(s) pper. Temperture chnges (s energy is relesed or bsorbed) 3. ) compound b) metl c) mixture d) ductility, or substnce is ductile e) element 4. ) t ny one of the positions shown b) prox. s shown. metls to left of line. c) s shown c pge 9

Elements & Compounds

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