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Unit2
Atoms
Beforeyouread:
•Lookatthewordsandphrasesintheboxbelow.Underlinethewordsand
phrasesyoualreadyknowandcheckthemeaningofthenewonesina
dictionary:
planetarymodeloftheatom,spectrallines,nucleus,proton,electron,neutron,shell,orbital,
diameter,electriccharge;chemicalcompound,particle,matter;atomicweight,atomicnumber,
isotope,periodictable,row,column,periodicity,properties,prediction;negatively/positively
charged,neutralindivisible;effervescence;acid,basis,alkali,causticsubstance,salt;todesignate,
todistinguish,topredict,toimply,toformulate,toapply;atthebottom,atthetop,ontheright/left,
inthemiddle.
6/1
•Now,listenandrepeatthewordsfromthebox.
Readorlistentothetexts.Tencompletetheactivitieswhichfollow:
Task1
Youwillhear(orread)apassageonthestructureofanatom.Canyougiveasimple
definitionofanatom?Doyouknowwhatisthestructureofanatom?Whatisan
atomicweightandatomicnumber?Whatareshells?Whatareisotopes?
Listentoorreadthetextonthenextpageandcheckyourguesses.
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