week 3 16 sep

Y13 dissolve away their problems

reminder all groups please look at the week ahead before you come to the lesson. Even if it's just looking at the vocabulary... Every little helps




Y13
obj 
to

• relate hydration to both lattice and solution enthalpies
• use the idea of polarity to descibe water-ion association
• propose methods to determine enthalpy changes in solution
• relate the solubilities of compounds to their solution and lattice enthalpies
• recall the basics of electrochemistry and circuits

text
pp 265-272
pp 273-277

act

• enthalpy of solution definition and explanation p265
• solvation molecular diagram p265
• q12 a nd b p265
• enthalpy of hydration p265 definition p266
• q13 p266
• calculation Hess diagram p266
• q15 p267
• sulfates p267-268
• intro to electrochem. repasar igcse electrolysis 
• Q=It p276

prac

• preparation of the sulfates p 267
• estimation of solubility of the sulfates
• electrolysis of Cu²⁺ containing solution with C and Cu electrodes

hw

choose a lab report (share the salts among us)

Y12 
obj
to learn

• properties and interconversion of liquid and solid states
• vapour pressure
• the definitions for different types of change reaction, formation, neutralisation atomisation, hydration

text
pp76-96

act

• Mr apparatus p76
• liquid state and examples, p77
• vapour pressure nitrogen and oxygen in air
• solid state with structure examples p78-84
• recycling p84

prac

• enthalpy of neutralisation HCl + NaOH
• enthalpy of hydration anhydrous and hydrated CuSO4

hw
calculations for mcΔt for reaction and molar

Y11
obj

• to distinguish between a sulfate and  sulfite
• to identify unknown metal ions by their flame colour
• revise the definition of oxidation and reduction in terms of electrons
• revise the test for hydrogen
• learn how to test for chromium III ions

text

• chromium: pp 13, 83, 144, 145, 154, 163, 156
• tests: pp 80, 156
• analysis section: pp 161-263

act

• intro video to chromium largest use: chrome-plating
• choose the chromium video from the The Periodic Table
• oxidation number in answer to where does the VII come from in manganate VII
• oxidation number of sulfur in sulfite and sulfate

prac

• preparation of acid rain from SO₂ + H₂O
• to distinguish sulfite from sulfate
• testing the acid rain with a carbonate revise limewater and CO2 testing
• testing the acid rain with KMnO4
• testing for chromium III ions if time revise amphoteric and do the same for Zn missed from last term
• test for nitrate and chloride bromide iodide

hw

q1 p263

Y10
obj

• to understand melting, boiling
• to understand freezing and condensation
• learn the differences between elements, compounds and mixtures
• the idea that these are physical changes
• the idea that these changes are reversible 

text
 pp 1-8

act

• revision cross sectional diagrams and their scale
• boiling water on Everest
• melting ice cream
• making gold ingots
• define melting, boiling, condensing, freezing and sublimation
• diagram of states p9 or from here
• graph p9
• q6 p9 
• impurities elevation b.pt. depression f.pt.

prac

• qualitative observation of ice meting
• qualitative observation of stearic acid melting
• qualitative observation of napthalene melting
• boiling point of distilled water link with video on Everest
• determination of melting point
• sublimation of NH₄Cl

hw 

diagrams of mpt tube experiment as guidelines here

Y8

obj
to learn

• the meaning of diffusion
• to explain diffusion in terms of particle theory
• the idea that particles are in random motion

text
pp70-71

vocab

• particle
• diffusion
• dye
• bromine

act

• copy the introductory pargraph p70
• draw and colour the diagram sequence p70
• copy the summary p71

prac

• the diffusion of KMnO4
• the diffusion of bromine
• large scale diffusion; wind and perfume in the atmosphere

hw

• as here and...
• drawing diagrams for the KMnO4 experiment