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.