Chemistry
RevisitingBooklet
Name:
1.Atomicstructureandtheperiodictable
Matchthedefinitionstothekey-wordsandthekey-wordstotheimages.
Q2. There are millions of different substances that make up our world. All these substances are made from chemical elements.
(a) What is an element?
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(b) Many substances are compounds. What is a compound?
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(Total 3 marks)
Separatingmixtures:
Distillation:
Theaboveprocessisalsousedinfractionaldistillationforcrudeoil,describethethreemainstepstodistillation:
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Whatischromatographyusedfor?
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Filtration:
Chromatography:
1. IdentifywhichcomponentsR,Y,BandGareintheMmixture.
2. CalculatetheRfvalueofthebluesubstance:________
Electronicstructure
Whatisthemassandchargeofthesesubatomicparticles?
Mass ChargeProton Electron Neutron
N_____________
Whatdoesthisnumberrepresent?
Whatdoesthisnumberrepresent?
1. Whichelementhastheelectronicstructure2.8.6?...........................................................................................................2. Nameanelementwithonlyoneelectroninitsoutershell...........................................................................................................
3. Theatomicnumberofsiliconis14–whatdoesthismean?......................................................................................................................................................................................................................
4. Nameanelementwith6electronsinitsoutershell...........................................................................................................
5. Nameanelementwith8electronsinitsoutershell...........................................................................................................
6. Whichperioddoessulphurbelong?...........................................................................................................
7. Drawtheelectronicstructureofasiliconatom8. Define
a. massnumber:...........................................................................................................b. Protonnumber:
...........................................................................................................c. Isotope:
...........................................................................................................9. Whatisadisplacementreaction?...........................................................................................................
10. Whyisfluorinemorereactivethanbromine?...........................................................................................................
11. Whatisacovalentbond?...........................................................................................................
12. Drawadot-and-crossdiagramtoshowthebondinginchlorine,Cl2
Theperiodictable
3:Statethesimilaritiesanddifferencesinthepropertiesofgroup1and7elements.
5:Explainhowtheatomicstructureoftheelementsingroup1,2and7and8affectitsproperties.
7:Predictpossiblereactionsbetweenthedifferentgroupsintheperiodictable.
Whatisthenameofthegroup1metals?
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Whydoesreactivityincreasedowngroup1?
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Whatissimilaraboutelementsacrossaperiod?
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Howmanyelectronsdogroup2elementshaveintheiroutershell?
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Howisthemodernperiodictablearranged?
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HowdidMendeleevorganisetheperiodictable?
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WhatdidJ.J.Thompson’splumpuddingmodelshow?
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WhatdidRutherford’smodelshow?(hintAlphascattering)
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WhatdidNeilBohrdiscover?
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Metalsandnon-metals:
Describethestructureofametal(drawadiagramtohelpyou;makesureyoulabelit).
Listthepropertiesthatmetalshave:
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Listthepropertiesthatnon-metalshave:
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Group0:
CompletetheDART!
1. Elementsingroup0have__electronsintheiroutershell
2. Heliumisdifferentandhas___electronsinitsoutershell
3. AllelementsinGroup0havea____outershell.
4. Elementsingroup0arereactive/unreactivebecause__________________________________.
5. AsyoumovedownthegrouptheenergyneededtoturnGroup0elementsintoagasincreases.Anotherwordforthisis______point,whichincreaseasyoumovedownthegroup.
Group1
CompletetheDART!
Also known as ....the ______ metals.
They have ___ electron in their outer shell.
Properties:
• soft - can be cut with a ________ knife
• conduct ______________
• _____________
• __________ when freshly cut
• In moist air the freshly ______ surface __________ easily as they react easily with
__________ in the air (______)
To avoid this they are kept in _______
Group7:
Canyoulisttheusesandpropertiesofanyelementsingroup7?
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Examquestions:
Markscheme:
M2. (a) a substance which contains one type of atom or a substance that cannot be broken down into anything simpler
for 1 mark 1
(b) more than one element/more than one type of atom combined/join together/bonded
for 1 mark each 2
Threestepsfordistillation:
- Heatsolution- Solutionwillvapouriseandcondense- Collectionoffractionsorsolvent.