9.1Course Overview 9.2Internally Assessed Practical Component
Over the course of 2 years students are required to complete regular practical assessments. This will be marked according to the IB scheme, but there is also a Marking Rubric available that allows students to compare their work to the School Academic grading system (1-7).
Once complete and marked all practical work is to be stored in the Chemistry office. The departmental markbook will be used to record marks for each practical activity. Each student will have 2 copies of their practical work record – one stored in the Chemistry office, one for their personal records.
Although not every practical task needs to cover each assessment area it is expected that students produce work that is easy to follow as a stand-alone item.
10Resources 10.1Electronic Resources – Google Drive and the Shared Drive
As the department develops resources they will gradually migrate to the shared drive. Care must be taken not to just dump all of your current resources in there – anything added to the shared drive needs to be present in a useful form and easily identified. If personal, unsorted resources are added, please store them in a folder that identifies the owner.
Resources under development will be on Google Drive until such point that they are finalized. As resources are developed there will be a greater use of the shared drive.
10.1.1Online Resources
Current (and ordered) online resources are:
IB In-Thinking -http://www.chemistry-inthinking.co.uk
This has been ordered
Brainpop animations http://www.brainpop.com
There is now a (Chemistry department) subscription to BrainPop animations. This has lots of short animations and activities suitable for lesson starters, discussion starters etc..
This is a single user subscription,be wary - it may not accept multiple logins. In this case it is usually better to download videos before watching (unsure how to do this - ask me how).
11Chemistry Exam (and Mock Exam) Guidance for Invigilators
iGCSE Chemistry (CIE 0620)
In the first session (2 hours) Students should do Papers 1 and 3. Paper 1 should be collected in after 45 minutes and paper 3 should be handed out at the same time. In the second session they should do Paper 6 (1 hour).
iGCSE Papers all are all self-contained with the exception of Paper 1 which needs to be answered on the answer sheet. Students may use calculators for all papers. If you could collect in the question papers as well that’s be smashing!
In total there should be (cover sheets for iGCSE are in BLACK font):
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iGCSE Paper 1
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iGCSE Paper 3
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iGCSE Paper 6
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Answer sheet
Total iGCSE students:
IB Diploma Chemistry
In the first session students should do Paper 1, when that is collected in you can hand out the Data Booklet for Paper 2. Timings are as follows:
Session 1
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Session 2
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Chemistry HL P1
Chemistry HL P2
Chemistry SL P1
Chemistry SL P2
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1hr
2hrs 15mins
45mins
1hr 15mins
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Chemistry HL P3
Chemistry SL P3
*
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1hr 15mins
1hr
*
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IB Paper 1 needs to be answered on the answer sheet. No Calculators (or Data Booklet) allowed for this paper.
Papers 2 and 3 should be answered on the question sheet provided, students may use calculators. Students also need the data booklet. Please tell the students not to write on them.
In total there should be (cover sheets for IB STANDARD LEVEL are in red font, IB HIGHER LEVEL ARE IN BLUE FONT):
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IB STANDARD Level Paper 1
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IB STANDARD Level Paper 2
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IB STANDARD Level Paper 3
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Answer sheet
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IB Data Booklet
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IB HIGHER Level Paper 1
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IB HIGHER Level Paper 2
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IB HIGHER Level Paper 3
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Answer sheet
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Total Standard Students: Total Higher Level Students:
12iGCSE Overiveiw of course
Atomic Structure and Bonding Summary
Topic
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Learning Objectives
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Practical
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Structure of the atom
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Describe the structure of the atom. Include words: proton, neutron, electron
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Isotope
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Describe what an isotope is
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Electron shells and valency
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Describe how the electrons fill into shells .
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Metallic bonding
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Describe properties of a metallic bond. Sea of electrons, conduction of electricity etc
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Test different substance to see if they conduct electricity?
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Ionic bonding
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Describe properties of an ionic bond.
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Covalent bonding
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Describe properties of both a simple covalent bond and giant covalent bond.
Be able to draw dot and cross diagrams of simple covalent molecules
Giant: silicon dioxide and diamond.
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Forming Glass – RSC 44
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Amount of a substance Summary
Topic
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Learning Objectives
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Practical
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Ionic charge
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Be able to determine the ionic charge of an ion from looking at the periodic table
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Word and symbol equations
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Be able to write word, symbol equations and ionic equations
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Relative atomic mass and relative molecular mass
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To be able to determine the Ar and Mr of atoms/compound from using the periodic table
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The determination of relative atomic mass – RSC 17
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The Mole
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Describe what a mole is, Avogadro’s number. Be able to calculate a mole, concentration, volume
http://www.liv.ac.uk/chemistry/links/constants.html
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Molar Gas Volume
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Be able to calculate molar gas volume
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React Mg with dilute H2SO4 with gas syringes to calculate molar gas volume – from SoW
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Stoichiometric calculations
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To be able to calculate mol/dm3, reacting mass, volume
http://science.widener.edu/svb/pset/stoichio.html
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Titration – HCl and NaOH with pheolphatlein?
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Emperical Formula
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To be able to calculate empirical formula and then molecular formula.
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The change in mass when magnesium burns – RSC 67
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% Yield and % purity
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Be able to calculate both % yield and % purity.
% Yield – calculate from simple displacement reactions
% purity – calculate from titration. E.g. Calculate amount of iodine in potassium iodade
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Not sure.
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Periodic Table 1 Summary
Topic
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Learning Objectives
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Practical
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Exothermic and endothermic reactions
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Be able to decide what an endothermic/exothermic reaction is. (by rise or fall in temperature)
Other practicals: dissolving salts – and using data loggers?
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Heats of Reaction – RSC 84
Thermometric Titration – RSC 45
Exothermic or endothermic – RSC 22
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Periodic Table
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Layout of the periodic table. Be able to predict properties of elements from periodic table (ie, metal/non metal, s/l/g)
Include metal/non metal border, valency electrons = group number.
General properties = mp/bp, conduction of heat, electrical conductivy, malleability, ductility.
Reactions with water, steam, dilute mineral acids
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Metals
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Use of alloys
Group 1 – trend in reactivity, mp, density, reaction with water etc – then predict Rb and Cs.
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videos of these are on the network
Group 2 – reactions with water, steam and HCl. (only Ca and Mg – then with HCl also do Fe)
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Demo – Lithium, sodium, potassium with water
The reactivity of group 2 metals – needs editing
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Reactivity Series
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Describe the reactivity series when solid metal reacts with aqueous ions.
Reactivity of metal oxides to get metals.
(SoW says other listed metals but not sure what they are – I thought copper from copper oxide would be good RSC 90 or Reduction of iron oxide by carbon RSC 35)
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Displacement reactions between metals and their salts – RSC 97
Demo - thermit
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Aluminium
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Unreactive oxide layer of aluminium, uses of aluminium,
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Extraction of metals
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Describe the ease of getting metals from their ores relating to the reactivity series.
Need to include: economic and environmental cost, use of fossil fuels, importance of recycling
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Air and Water Summary
Topic
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Learning Objectives
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Practical
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Purification of water
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Looking at how water is purified by filtration and chlorinaton.
Possible link to the water crisis (water aid charity). Process of how water is cleaned in 3rd world countries – chlorine is toxic but safe in very dilute.
Sow link: www.eng.rpi
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Composition of the atmosphere and noble gases
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To know what all the gases that make up the atmosphere are.
Small amount atmosphere are noble gases, need to know uses of helium and neon. They are inert and why (full shell of valence electrons)
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Pollutants
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The source of CO, SO2, NOx, Pb compounds and how these affect businesses and health and the environment – (massive bit in SoW).
What the role of the catalytic converter is in reducing pollution.
(loads of links in the SoW)
- Project – research into Beijing’s pollution problem. What causes it, what are the effects on health and business and what us being done to overcome the problem
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ICT suite/bring laptops/ipads
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Fractional Distillation of air and uses of O2
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How Nitrogen and oxygen can be separated by fractional distillation.
Explain mp/bp
Use of oxygen in oxygen tents in hospitals
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Rusting
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Reaction of iron with oxygen to form rust.
What conditions will cause rust to form quicker than other conditions.
Methods of rust prevention; paint, galvanizing, sacrificial protection
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Causes of rusting – RSC 50 (Al also has loads of stuff on this)
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Formation of carbon dioxide
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Combustion of fossil fuels, respiration, and a reaction between acid and a carbonate.
Possible project: role of carbon dioxide from combustion of fuel leading to global warming.
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Demo: Combustion RSC -16
Practical: HCl with marble chips and bubble through limewater
Practical: respiration – blow through limewater
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Periodic Table 2 Summary
Topic
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Learning Objectives
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Practical
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Halogens
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Describe chlorine, bromine and iodine as diatomic molecules. Be able to draw dot and cross diagrams.
Know their colour, state and reaction with other halide ions.
Be able to write half equations of all these reactions.
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Halogen displacement reactions – RSC 52 (newer print out –P152) – worksheet RSC 19
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Reversible reactions
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To know that reactions can be reversed by changing the reaction conditions.
Small amount atmosphere are noble gases, need to know uses of helium and neon. They are inert and why (full shell of valence electrons)
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Hydration/dehydration of copper sulfate (test for water)
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Equilibria
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What an equilibrium is. Le Chatilier’s principle, and how changing reaction conditions can affect equilibrium.
Need to cover the Haber Process (making NH3) and the Contact process (H2SO4). And economic and environmental issues/advantages of changing the reaction conditions – ie. Cost/energy/fossil fuel use
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Demo: sodium chromate/dichromate equilibrium and iodine/iodide (don’t know what these demos are but are in SoW)
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Displacement of ammonia from its salts
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Experiments involving heating ammonium salts with and without NaOH.
Objective: to illustrate how the liming of soils can lead to ammonia loss from ammonium salts added as fertilisers.
NO IDEA!!
See website link in SoW
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The experiments mentioned – DON’T KNOW!
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Reactions of heat on hydroxides
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Describe the action of heat on the hydroxides of calcium, copper(II), iron(II), iron(III), magnesium, potassium, sodium and zinc.
To determine the trend in reactivity of Ca(OH)2, Zn(OH)2,Fe(OH)2 from
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Causes of rusting – RSC 50 (Al also has loads of stuff on this)
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Reactions of heat on nitrates
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Describe the action of heat on the nitrates of calcium, copper(II), iron(II), iron(III), magnesium, potassium, sodium and zinc.
Don’t see how any of this fits!
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Fertlisers
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How nitrogen, phosphorus and potassium are needed for fertilisers.
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Make fertilizer – RSC 91?
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Sulfur
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What are the sources are. Link to allotropes but not essential.
The use of sulfur in the production of sulfuric acid.
Sulfur dioxide is a bleach in the production of wood pulp and making paper.
Possible do this as a research project?
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Chemical Analysis Techniques Summary
Topic
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Learning Objectives
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Practical
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Paper Chromatography
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To know that this is a method of separating a mixture of different liquids.
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Smarties Chromatography - RSC 71
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Thin Layer Chromatography
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Use Rf values to interpret chromatograms
Use of locating agents for colourless substances
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Possibly separating a mixture of amino acids and simple sugars – see SoW – need to order UV lamps, dark boxes, TLC paper
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Purity of substances in every day life
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Use examples of NaCl – use on the road to melt ice but also used as food flavouring so must have different purity. NaCl changes the mp/bp of the water.
Drug purity regulations – www.cgmp.com
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Titration to find the purity of vinegar (Al has resources for this)
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Methods of purification
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Students need to know about using a suitable solvent, filtration, crystallation, distillation and a fractionating column. Then they need to be able to select a suitable purification method based on 1) magnetic properties and 2) varying solubulities.
Typical solvents to use are water or ethanol. Demonstrate separation of iodine using cyclohexane.
(Refer to the fractional distillation of : crude oil (syllabus section 14.2), fermented liquor (syllabus section 14.6).
Filtration is used in one of the salt preparation methods to remove excess solid.
Crystallisation is used in most salt preparations to obtain the final product.Demonstrate the (partial) separation of ethanol from water by distillation. Demonstrate separation of ‘petroleum fractions’ from mixtures of hydrocarbons.
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Haven’t got a RSC sheet but definitely need a practical here.
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Chemical Test for water
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The two tests for water – cobalt chloride paper and anhydrous copper sulfate.
Possible extension: hardness of water?
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A chemical Test for water – RSC 43
Testing water hardness – RSC 42
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Cation, anion and gas testing
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Students need to know all the reactions of the following anions, cations and gases.
aqueous cations;
aluminium, ammonium, calcium, copper(II), iron(II), iron(III) and zinc, (using aqueous sodium hydroxide and aqueous ammonia as appropriate).
anions;
carbonate (by reaction with dilute acid and then limewater), chloride (by reaction under acidic conditions with aqueous silver nitrate), iodide (by reaction under acidic conditions with aqueous lead(II) nitrate), nitrate (by reduction with aluminium), sulphate (by reaction under acidic conditions with aqueous barium ions)
gases;
ammonia (using damp red litmus paper), carbon dioxide (using limewater), chlorine (using damp litmus paper), hydrogen (using lighted splint), oxygen (using a glowing splint).
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Testing for salts for anions and cations – RSC 80
Making and Testing ammonia
Squeeky pop test – Mg and HCl
CO2 test – sodium carbonate solution, limewater and HCl
Oxygen test – H2O2 and MnO2
Chlorine – electrolysis of brine?
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Factors affecting the rate of reaction
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Students need to know how rate of reaction can be affected by concentration, particle size, catalysts (and enzymes) and temperature.
Need to be able to explain this in terms of particles and collisions.
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Demo: Custard powder explosion
Effect of concentration on reaction rate – RSC 65
The effect of temperature on reaction rate – RSC 64
Al also has loads of stuff on this – we did our GCSE coursework on this at my previous school
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Practical investigation
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Students needs to come up with a method and investigation into how to manipulate rate of a reaction that will evolve a gas.
Use gas syringes and decomposition of H2O2.
Need to be able to interpret data/ plot data to show volume vs time with changing conditions.
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Effect of light on the speed of reactions
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Affect of light on silver chloride/bromide
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Making a photographic print – RSC 70
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