welcome to week 5
take cover: Y13 mix chemistry with electricity
this week, Y12 shall perfect their titration technique
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practical week
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cie practical 7 electrochemical cells and the Nernst equation, to:
- estimate the emf of the cells Cu-Zn.Mg
- plan the practical
- analyse the results
- evaluate
- conclude
- learn and use Nernst for dilution
- learn the limitations of cells when making predictions
- cie prac 7
- pp 278-284
- standard hydrogen electrode p279
- measuring half cell electrode potentials p283
- diagram reviews pp279-284
- joint collaboration ¡que dios nos guarde muchos años!
- discussion on findings to include all the errors
- suggestions for improvement
- have a look at a paper 5
- your electrode as standard Mg-Zn Mg-Cu Zn-Cu
- effect of dilution
hw
past paper and revise for mid term test
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to understand how
- to determine the enthalpy of hydration
- bond energy relates to enthalpy
- to use bond energies to calculate enthalpy change
pp97-102
act
- anhydrous salt p99
- bond energies p99
- reaction pathways p100
- calculations p101
- q12 p100
- enthalpy of solution of CuSO4
- enthalpy of solution of NH4Cl
hw
summary p102
11
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p135
act
topic change
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pp10 - 13
prac
summary p102
11
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- the idea of ease of extraction of a metal from its ore
- position in reactivity series
- displacement reactions
- the idea of steel as an alloy of Fe and C
- learn the gcse way to write equations
- methods for rust prevention
p135
act
- formulae of the week. this week, Fe III and Zn
- revise acid reactions for the acid + metal section of the equations test
- Blast furnace, p135
- video blast furnace
- video steel making
- Zinc extraction, p136
- revise test for hydrogen
- nails from rusting experiment + sulfuric acid then using resultant solution...
- test for iron II ions
- test for sulfate ions
- oxidation (rusting) of Fe by conversion to FeO in flame and reaction as a basic oxide
- igcse summary of all metals
- Fe + H2SO4 experiment diagram and equations. Extended try ionic equations.
- revision for mid term test chapter 5-6
topic change
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- chromatography as a technique involving solubility
- the idea of a rf value
- the idea of chemical formula as a representation of ratio of atoms in a compound
- learn and identify from formulae: atom, molecule, compound
- carried forward diffusion from last week
- revise separation techniques sand-salt ethanol-wine...
- watch the chromatography demo
- copy the table columns for metals and non metals , p11
- Definition of: atom, element, molecule p 10-11
- Compounds, diagram p13
pp10 - 13
prac
- chromatography of dyes
- produce Hydrogen Fe + H2SO4 metal non metal element
- use it to produce water by reaction with air
- revision of soluble miscible immiscible terms use iodine in cyclohexane water
- LEAVE SPACE after diffusion for... copy and learn check list, p8
- revise for mid term test
8
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- the idea of Brownian Motion to explain diffusion
- relationship between gas pressure and Brownian Motion
- the idea of expansion in a solid
text
p74-77
p74-77
vocab
- random
- strike
- pollen
- jiggle
- bumping
- gas
- pressure
- collapse
- squeeze
- review the tea diffusion
- Robert Brown and pollen
- Brown's theories and drawings p75 the idea that pollen can't swim
- particle in a gas p76
- less space more pressure p76
- higher temperature more pressure
- ball and ring video
prac
- warming a flask p76
- collapsing bottle p77
hw
- none this week bio's turn
- revision for mid term test
