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- 1. Assignment1Unit1 Chemistryand OurEarth Grade Have you done... Any comments/feedback P1 Filledinatable sayingwhichchemicalsare elements,whichare mixturesand whichare compounds P2 Got a resultstable thatshowswhatthe physical propertiesof certainchemicals are? (physical properties are whether it is malleable – can be hammered into shape, ductile – pulled into a long thread, brittle – smashes when you hit it, melting and boiling points – are they high (need lots of heat) or low (melts reallyquickly) P2 Have you analysedaresultstable tosay whichchemicalsare solid,liquidorgasat room temperature? P3 Drawn the atomicstructure for the first20 elementsintoperiodictable P3 Draw out twodifferentisotopesandexplainedwhatanisotope is P4 Describedhowthe elementsingroup1 reactwithwater,oxygenandthe halogens P4 Describedhowthe elementsingroup7 reactwithwaterand each other (displacement reactions) M1 Drawn a picture to showwhatthe moleculesinanelementlooklike M1 Drawn a picture to showwhatthe moleculesinacompoundlooklike M1 Drawn a picture to showwhatthe moleculesinamixture looklike M2 Why isbrick usedinthe constructionindustry? M2 Why iscopperwire usedbyelectricians? M2 Why is glass used for windows?
- 2. Assignment1Unit1 Chemistryand OurEarth M3 Draw out the atomicstructuresof all the elementsingroup1,addnotesto your drawingstoshowwhichhas the biggestatom,whichhasthe smallest,whichhas the most electrons M3 Draw out the atomicstructuresof all the elementsingroup7, add notestoyour drawingstoshowwhichhas the biggestatom,whichhasthe smallest,whichhas the most andleastelectrons M4 Whenwe use any of the elementsfromgroup1 or 7 it isusuallyasa compound (e.g. you are more likely to be given sodium chloride in class than a lump of sodium and a jar of chlorine), why? D1 How couldyouprove that air isa mixture? D1 How couldyouprove that ironand sulphurbecome ironsulphide onlyafteryou heatit up? D2 Explainedwhy the elementsingroup1 getmore reactive as youdownthe group D2 Explainedwhythe elementsingroup7 getlessreactive asyoudownthe group