SkillsforScienceLifeSciences UFPL3
- Subject Code :
UFPL3
On CampusAssignmentBrief Academic Year 2024-25
Pleasereadthisdocumentcarefully.Itincludesthe learningoutcomes,assignmenttask,information about academic misconduct and marking criteria. Please speak to your tutor if you have anyquestions.
Programme |
UndergraduateFoundationProgramme: LifeSciencespathway |
Module |
UFPL3:SkillsforScienceLifeSciences |
Assessmenttitle |
SkillsforScience- LabAssessment 2Analysis Chemistry-based |
Deadlinedate |
To beconfirmedbyyourtutor |
Weighting |
Thisassessmentcountsfor40%ofyouroverallgradeforthismodule |
Passmark |
40% *pleasenoteyourUniversitymayrequireahighergradeforprogression. |
Assignmentsummary |
Throughout the Skills for Science module, you will learn key skills and techniquesthatsupportyourstudiesonthe LifeSciencespathway.Inthis assignment, you will complete sections of a lab report to demonstrate yourknowledgeandunderstandingoflaboratoryreportwriting. |
Submissionofwork |
SubmissionofworkviaTurnitinAssignment. |
Feedback |
Feedbackwillalsobecommunicatedbacktoyouviayourtutor.Theywill confirm the timescale in which you will receive your feedback. |
Importantdetails
Pleasefollowthebelowinstructions:
Wordcount |
2,000words |
Filetype |
Word Processed/PDF you may also wish to include images or screenshotsofhand-drawndiagrams,graphsandcalculations,however these can also be produced digitally |
Font |
12pitchfontArialorTimesNewRoman |
Format |
Doublespacedandjustified |
Referencing |
Harvardsystem(oranyotherscientificreferencingformat) |
Notes |
Yourassignmentmustincludepagenumbersandwordcount. Youwillreceivea10%penaltyforthisassessmentifyougoovertheword count bymore than 10%.If your assignment is significantly under the word count, you may not have answered the question in full. This will be reflected in your overall mark and feedback given by your tutor. Thewordcountdoesnotincludecontents,diagrams,graphs,calculations or end of text references or appendices. |
Modulelearningoutcomes: |
On successful completion of this assessment, you will have met criteria towards the following module learning outcomes: Knowledgebasedoutcomes: LO1.Demonstrateanddescribeethical,safeandskilfulpracticaltechniques,selecting appropriate methods for an investigation. LO2.Interpretandanalysetheimportanceofreliableresultsinexperimentalinvestigations. LO3. Evaluate the impact of scientific methodologies, making suitable recommendations for future work. Skillsbasedoutcomes:
|
Assessmentcriteria: |
Inordertosuccessfullycompletethisassessmentandmeetcriteriatowardstheabovelearning outcomes, you must satisfy the following criteria: AC1.1 Recognisetheimportanceofsafeworkingpracticewithinalaboratoryenvironment. AC1.2 Explainhowtoidentifypotentialrisksandhazardstoaninvestigationandthe environment. AC1.3 Demonstratean analysisofsafeequipmentuseandsafemethodologyproceduresofan investigation. AC2.1 Demonstrateabilitytoidentifyuncertaintiesinmeasurementsandselectappropriate techniques to perform error calculations. AC2.2 Interpretthereliabilityofresultsandanalysehowpotentialsourcesoferror, uncertainties, and anomalies impact findings. AC3.1 Critiqueexperimentaldesignandprocesseswithinagivenexperiment. AC3.2 Offersuitablerecommendationsandimprovementsthatcanbeimplementedinfuture experimental work. |
Assignmentinstructions: |
YouarerequiredtoproducetheAnalysissectionofalabreporttodemonstrateyourknowledgeand understanding of effective laboratory writing skills. In the assignment, you will be provided with an aim and willthen need to follow the promptsprovided and completethe sections asinstructed.The final piece of work must be a maximum of 2,000 words and submitted on Turnitin. If you need to draw graphs, diagrams or write calculations, these can either be done digitally using Excel/appropriate software, or by hand and included as a screenshot or image as part of your electronic submission. |
LabAssessment2-Instructions You have been provided with the Aim, Introduction, Method, Hypothesis and Results sections of a Lab report. In Section 1 Comprehension Questions, you must answer questions based on the information provided. You must then complete Sections 2 to 5, to create the Results graph, and write the Discussion and Conclusion sections to complete the rest of the Lab report, as you have been taught to do in Skills for Sciences classes. Finally, Section 6, you are to observe an extension experiment and analyse and evaluate the results. Remember to include the references at the end from your research. Thequestionsandinstructionsfor eachofthetaskscanbefoundinAppendixA.Pleaseensureyoucreate your lab assessment in a separate document. Do not write it directly on the instructionssheet. Give it a meaningful filename such as your student number, name and Skills lab2. Section1 -ComprehensionQuestions ReadtheinformationprovidedintheIntroduction,MethodandSafetysectionstoanswerthe questions. Donotcopy and paste information, use yourown words or paraphrase. Section2Results RawdatahasbeenprovidedtoyouinaResultstable.Youmust: Completethemissingcolumnsusingthedataprovided intheResultstable. Showanycalculationsusedbelowthetable. Constructagraph.Thegraphcanbehand-drawnongraphpaperorcomputer-generated for exampleon MSExcel. The graph should be constructed with all aspects of a scientific graph as shown to you in Skills for Science lessons. Thegraphshouldincludealineofbestfit. Show all workings for the calculation of the gradient (if applicable). Section3DiscussionA: Using the information provided by the aim, introduction, hypothesis and method sections you are to analyse the results graph and write a complete Discussion section. ThefirstsectionoftheDiscussionshouldanalysetheresults.Youshould: Statethemainresultandoutcomeoftheexperimentanddiscusstheanswertothe question in the aim. Describe what the graph shows, using the key scientific words for describing trends in graphs.Thisalsoincludesadescriptionoftherelationshipbetweenthevariablesinthe graph. Discusswhethertheresultsagreewiththeexpectedtheory. Clearlyidentifyanyanomalous(outliers)results. Section4DiscussionB: Inthe2nd sectionoftheDiscussion,youmustevaluateanddescribetheaccuracyoftheresults, through the identification of experimental errors and explain how to reduce them. Youshould: Statealloftheexperimentalerrorsthatmayhave affectedthereliabilityoftheresults. Describeiftherewerethereanylimitationsoftheequipmentused. |
Statehowthemethodcanbeimproved,orifequipmentbechangedtomaketheresults more reliable.
Section5 ConclusionandFurtherWork:
The conclusion is a summary of the Discussion section.
Youshould:
Stateasummaryofthemainresultthatanswersthe aimofthe
Brieflyexplainhowreliablethemainresultwas(e.g.usinga%difference).
Statethemainerrorthatmayhavecaused themost inaccuracytothis
Summariseifyourhypothesis/predictionswerecorrectand
Describethefurtherwork/extension.Thismeans,youmustwriteasuggestionforanew experiment that you can do next but still related this one.
Section6ObserveandAnalyse:
Youhavebeenprovidedwithalinktoaninvestigationtoreadortowatchavideoofanexperiment. Using the information provided answer the questions to analyse and evaluate the results. This includes, explaining the main results of investigation, describing how reliable results and how the experiment could be improved.
Section7References:
Create a reference section listing the range of different types of resources (e.g. websites, articles, books) that you have cited. You should use Harvard referencing in the correct format. Be sure to proofread your document to avoid errors in spelling, punctuation and grammar.
AcademicOffences |
Weexpectallsubmittedworktobeyourownwords(apartfromin-textquotations),writteninastyle that reflects your English language level. The following are all academic offences and will result in a penalty being applied: Plagiarism-copyingotherpeoplesworkandpresentingitasyourown; Contractcheating-whenathirdparty(e.g.essay-writingservice)receivespaymenttoproduce work on your behalf; UsingAIToolse.g.ChatGPTtoproduceyourwork,unlessincludedaspartoftheassignment task; Collusion-whenapieceofworkisproducedwiththeassistanceofanotherperson/s; Translation-whereworkhasbeendirectlytranslatedfrom yourfirstlanguage,usinganonline translator or translation app. ThefulldetailsofourAcademicOffencesPolicycanbefoundintheProgrammeHandbookonCanvas. YoumustcompletetheCourseworkSubmissionDeclarationtodeclarethatallworksubmittedis your own. This is available from your Student Hub on Canvas. |
AppendixA
SkillsforScience Labassessment2-CHEMISTRY- INSTRUCTIONS
Please find in this document the Aim, Introduction, Method, Hypothesis and Results sections of a Lab report.UsingthisinformationandtheskillsyouhavebeentaughtinSkillsforSciencesclasses, complete the following:
Section1-ComprehensionQuestions-Readtheinformationprovidedtounderstandthe context of the lab investigation to answer the questions.
Section2a:ResultsTableandCalculations
Section2b:Results Graph andgradient
Section3: DiscussionAnalysisofgraph
Section4: Discussion Evaluatingerrorsandimprovements
Section5:ConclusionandFurther
Section6:ObserveandAnalysisAnalyseanextension
Section7:References
Pleaseensureyoucreateyourlabassessmentinaseparatedocument.Donotwriteitdirectlyontheinstructions
sheet.
LABASSESSMENT2:RateofReaction
Aim:Toinvestigatetheeffectofchangingtheconcentrationwheninvestigatingthereactionbetween hydrochloric acid and magnesium.
Mg(s)+2HCl(aq)MgCl2(aq)+H2(g)
Introduction:
The rate of chemical reactions may be monitored by measuring the amount of reactants that have been lost, or the amount of products that are formed. This may be carried out in a variety of ways depending on the type of reaction. When Magnesium reacts with Acid, Hydrogen gas is formed which may be collected and measured as the reaction proceeds to produce a graph which takes this form and is known as logarithmic growth:
Hypothesis:
More concentrated acid will have a faster initial rate of reaction due to more frequent successful collisions between reactants.
Apparatus:
eyeprotection
conicalflaskwithside-armandbung
deliverytube
gassyringe(100cm3)
clampstand,bossandclamptosupportthe
test-tuberackorclampstand,bossandclamptosupporttheboiling
measuringcylinder(25cm3)
accesstoabalancereadingtoatleasttwodecimalplaces
stop clockor stopwatch
Safety
Weareyeprotection
Ifgasvolumeexceedsthegassyringe,thenpressuremustbereleasedbyremovingthe
Hydrogenformedisflammablesonosourcesofignitionshouldbe
Chemical/ Activity |
Hazard information |
Risk |
Precautions |
EmergencyAction |
Mg(s) magnesium ribbon |
Fireorburn |
Wearsafetyglasses and lab coat. Use small (<1g> |
Usefireblanketif necessary. |
|
2.00moldm3aqueous hydrochloric acid, HCl(aq) |
Chemicalburn |
Wearsafetyglasses, glovesandlabcoat. |
Washtheaffectedarea with plenty of water. Seekmedicalattentionif needed. |
|
1.00moldm3aqueous hydrochloric acid, HCl(aq) |
Chemicalburn |
Wearsafetyglasses, glovesandlabcoat. |
Washtheaffectedarea with plenty of water. Seekmedicalattentionif needed. |
|
0.500moldm3aqueous hydrochloric acid, HCl(aq) |
Chemical burn/irritation |
Wearsafetyglasses, glovesandlabcoat. |
Washtheaffectedarea with plenty of water. Seekmedicalattentionif needed. |
Hydrogengas releasedfrom reaction |
Fire or Explosiverisk |
Whereappropriate PPE. Disconnect the gas syringe once the reaction has been completed.Ventthe gas into an appropriate fume hood. Keep away from heat/naked flames. |
Useafireblankettostop fire spreading. Understand stop, drop androlltechniquesand know emergency exits. Callemergencyservices if needed. |
|
Connectinggas syringe to side arm flask |
Brokenglass |
Cuts and possible chemicals enteringthe skin. |
Exercise extreme care when making connections.Donot use excessiveforce. |
Sweep broken glass awayanddisposeofitin the glass bin. Clean wounds and ensure all glass is removed. Cover and seekmedicalattentionif required. |
Procedure:
In a chemistry laboratory at the university, a procedure was carried out to determine the reaction rate ofmagnesiumwithhydrochloricacid.The apparatusconsistedofaconicalflask(250cm3)connectedto a gas syringe, as shown in the diagram.
The first step of the procedure involved measuring 20 cm3of 2.00 moldm3HCl(aq) and addingit tothe side-armboilingtube.Then,apieceofmagnesiumribbon,weighingapproximately0.08g,wasplaced in the side-arm conical flask and the stopper was quickly inserted. The stop clock or stopwatch was immediately started.
Thenthevolumeofgasproducedwasrecordedevery10secondsuntilthereactionwascompleted, which was determined by the cessation of any changes in the volume of gas produced.
The procedure was repeated with clean equipment using the other provided concentrations of HCl(aq). This allowed for the determination of the effect of different concentrations of HCl(aq) on the reaction rate of magnesium.
Diagram:
Variables:
Independentvariable:Concentrationofhydrochloricacid(mol/dm3)
Dependantvariable:VolumeofHydrogenproduced(cm3)
Controlvariables:Massofmagnesium,Temperature
ControlVariable |
Howcontrolled |
Consequencesofnotcontrolling |
Massofmagnesium(g) |
Useofa2d.p.balancetomaintaina constant mass for each experiment |
Smallermasswillcausethereaction tohappenfasterthanexpectedand larger mass will result in a slower reaction. |
Temperature(oC) |
Use of an air conditioned environmentally controlled lab. Or puttheflaskinafixedtemperature waterbath. |
Warmerconditionswillmakethe reaction happen faster. Cooler conditions will produce slower results. |
SECTION1-ComprehensionQuestions5marks
ReadtheinformationprovidedintheIntroduction,MethodandSafetysectionstoanswerthequestions.
Q1) What does the gradient of the graph represent for this experiment?
Q2)Nameoneadditionalcontrol variable that has not been included.
Q3)Nametwomoregeneralsafety rules which should be followed in the lab to avoid accidents or damage?
Q4)Gascouldbecollected inaninverted100cm3measuringcylinderfilledwithwaterifagassyringeis not available. Usehttps://chemix.orgor similar or insert a hand-drawn diagram to show alabelleddiagramof this set up.
Q5) Why is it important to wear eye protection for this experiment?
SECTION2a-ResultsTable5marks
Raw data has been provided to you in the results table below. Using the information in the Aim, Introduction, method sections, you are to complete the results table and show all calculations.
Complete the missing data in the table and circle or highlight any anomalous results.
Volumeof./cm3 |
|||
./s |
2.00moldm3HCl(aq) |
1.00HCl(aq) |
0.500 moldm3HCl(aq) |
0 |
0 |
0 |
|
10 |
32 |
12 |
4 |
20 |
54 |
20 |
7 |
30 |
65 |
29 |
9 |
40 |
73 |
36 |
11 |
50 |
77 |
42 |
13 |
60 |
78 |
48 |
15 |
70 |
79 |
53 |
17 |
80 |
80 |
58 |
25 |
90 |
80 |
63 |
21 |
100 |
80 |
67 |
23 |
110 |
69 |
25 |
|
120 |
80 |
71 |
26 |
130 |
80 |
73 |
28 |
140 |
80 |
68 |
30 |
150 |
80 |
75 |
31 |
160 |
76 |
33 |
|
170 |
80 |
77 |
35 |
180 |
80 |
36 |
SECTION2b-Resultsgraph-5marks
2b)Plotagraphusingtheresultstableandinsertithere.Itmaybehanddrawn (simplest)orcomputer generated (excel would not be very good for this).
(Marks are awarded for axes, scale, correct plotting, lines of best fit)
SECTION2cGradientcalculations5marks
2ci) Once you have created a line of best fit for each concentration, then draw the tangents on the graphsattheappropriatepointstoworkouttheinitialrate attime=0foreachHClconcentration. Show your calculations clearly.
2cii)Drawthetangentsonthegraphsattheappropriatepoint toworkouttherateattime=25sforeach HClconcentration.Show your calculations clearly.
2ciii)Drawthetangentsonthegraphsattheappropriatepointtoworkouttherateattime=50sfor
eachHClconcentration.Show your calculations clearly.
SECTION3Discussion:Analysisofgraph-5marks
Using the information provided and the graph, write the first section of the discussion which analyses the results graph and explains the final result. This includes a description of what the graph shows, using the key scientific words for describing trends. A description of the relationship between the variables in the graph and an identification any anomalous (outliers) results. You should also discuss whether the results agree with the expected theory/aim.
SECTION4Conclusionandfurtherwork-5marks
Give a summary of your discussion in the form of a conclusion. This should include the answer to the aim of the investigation, the reliability of the final result and if the hypothesis was correct. You should also state the main error that may have caused the most inaccuracy to this result.
Give an outline of an extension experiment that can be carried out next as further work. The extension experiment should be related but not the same as this investigation. Include the aim, and a brief scientific overview of the experiment and how the aim would be investigated.
SECTION5Discussion:Evaluatingerrors&improvements-5marks
Using the information provided, write the second section of the discussion to evaluate and describe the accuracy of the results, through the identification of experimental errors and how to reduce them. This must include an explanation of all of the experimental errors that may have affected the reliability of the results. Include a discussion of how the method can be improved or equipment be changed to gain more reliable results.
SECTION6ObserveandAnalyse-10marks
FollowthislinktothereactionbetweenfixedconcentrationsofSodiumThiosulfateandHydrochloric Acid at different temperatures.
https://www.youtube.com/watch?v=lX_TzMDWKlw
6a) What is the hypothesis for this experiment?
6b)Usingtheresults,plotagraphwiththeindependentvariableonthex-axis.Addalineofbestfit. 6c) Use your observations and graph to write a summary of the results of this experiment.
6d)Evaluateanysourcesoferrorintheexperimentanddiscusshowtheymightaffectthemainresult. Give ideas on how the errors may be reduced by adaptations to the equipment and/or method.
SECTION7References5marks
Create areference section listingthe range ofdifferent typesof resources(e.g.websites, articles,books) thatyouhavecited.Youshould useHarvardreferencing inthecorrectformat.Besuretoproofreadyour document to avoid errors in spelling, punctuation and grammar.
MarkingcriteriaSkillsforScienceLifeSciencesCHEMISTRY Lab assessment 2 Analysis (Rate of Reaction)
Incomplete |
Developing |
Satisfactory |
Competent |
Exceeding |
Mark |
|
1mark |
2marks |
3marks |
4marks |
5marks |
Max /5 |
|
1. Comprehension Questions |
Questions1markeach5marksintotal |
|||||
2a.ResultsTable |
Correctly labelsoneof thecolumnheadingsor units. Recognisedoneormore missingvaluesbutfailed to fillin the number. |
Correctly labelstwoof the column headings or units. Recognisedonemissingvalue and correctly filled it in. |
Correctly labels allthreecolumn headings or units. Recognisedtwomissingvalues and correctly filled them in. ANDcorrectlyidentifiedoneof the anomallies (may be circled on the graph). |
Correctlylabelsallthreecolumn headings or units. Recognisedthreemissingvalues and correctly filled them in. AND correctly identifiedboththeanomallies(maybecircled on the graph). |
Correctlylabelsallthreecolumn headings or units. Recognisedandcorrectlyfilledin allofthethemissingvalues ANDcorrectlyidentifiedboththe anomallies(maybecircledonthe graph). |
|
2bResultsGraph |
Attempts to draw a suitable graph but severalfactorsmissing. Does NOT identify anomally. |
Hand-drawn or IT generated graph drawn with numerous errors. Must haveappropriate scaleandatleastonefromthe followinglist:correctlylabelled axes with units, correctly plotted points, line of best fit on all three concentrations. |
Hand-drawn or IT generated graph drawn but contains errors. Must haveappropriate scaleand at least3from the followinglist:correctlylabelled axes with units, correctly plotted points, line of best fit on all three concentrations. |
Hand-drawn or IT generated graph drawn but contains errors. Must haveappropriate scaleand at least4from the following list: correctly labelled axes with units, correctly plottedpoints,lineofbestfiton all three concentrations. |
Hand-drawn or IT generated graph createdcorrectlywith no errors. Everything from the followinglistmustbepresentand correct: appropriate scale, correctly labelled axes with units, correctly plotted points, line of best fit on all three concentrations. |
|
2c GradientCalculations |
Limited attempt on gradientcalculations. |
At least 3 gradient calculations aregivenbutmethodstepsnot shownorcalculationincorrect. |
Atleast5gradientcalculations arecorrectlycarried out. |
Atleast7gradientcalculations arecorrectlycarried outwith unitsgiven. |
All gradient calculations are correctlycarriedoutwithcorrect units given. |
|
3Discussion: Analysis ofresults |
The student has vaguely statedthemainresultof theexperimentanddoes notattempttorelateit |
The student has generally stated the main result of the experimentandattemptedto |
The student has stated the mainresultoftheexperiment and related it to the aim and hypothesis. |
Thestudenthasstatedthemain result of the experiment and related it to the aim and hypothesis. |
Thestudenthasstatedthemain result of the experiment and related it to the aim and hypothesis. |
totheaimand hypothesis.
Discussionofresultsishazyand difficult to follow. |
relatedittotheaimand hypothesis.
Somebasicdiscussionrelating totrendsandpatternsrelating to the results or graph. |
Correctlyidentifiesthedirectly proportionaltrend relating to the results in graphs with appropriate scientific terminology used throughout. |
Correctly identifiestrends and patterns relating to the results andgraphwithincreaseddetailfromall threelines of best fit using appropriate scientific terminology throughout. Correctly describes the relationshipbetweenthevariables. |
Correctly identifiestrends and patterns relating to the results andgraphwithanexcellentlevel of detail describing the lines of best fit using appropriate scientific terminology throughout. Correctly describes the relationship between thevariables. |
||
4. Conclusionand further work |
Simplestatement of the conclusion. May besometenuouslinktothe Aim/Hypothesis/main result. Furtherworkmissingor not relavent |
Simplestatement of the conclusion.Mustbelinkedtoatoneof the Aim/Hypothesis/main result. Furtherworkbasic. |
Statementoftheconclusion linked totwoof the Aim/Hypothesis/mainresult.
Good use of scientific terminologyusedthroughout.
Futherworkisfair. |
Statementof the conclusion linked toall three- Aim, Hypothesisandthemainresult.
Good use of scientific terminologyusedthroughout.
Suggestsfurtherworkisclear andrelatdtocurrentlabaim. |
Statementof the conclusionclearlylinkedtoallthree-Aim, Hypothesisandthemainresult.
Thereisacleardescriptionof furtherwork which may be carriedoutandrelatedtothe current aim. Excellent use of scientific terminologyusedthroughout. |
|
5. Discussion:Evaluatingerrors andimprovments |
Demonstrates a basic understandingofwhere errors may have occurred.
Thesemaydescribedina haphazard way. |
Recognises atonesource of errorandattemptstoexplain theeffectthatthesewillhave on results.
Somesuggestionmade to improvethereliabilityofresults of at least one error stated. |
Recognises at leasttwosources oferrorandclearlyexplainsthe effect that these will have on results.
Coherent suggestionsmade to improvethereliabilityofresults of some errors stated. |
Recognises at leastthreesourcesoferrorandclearly linksthese to the effect on results.
Coherentscientificsuggestionsmade to improve the reliability ofresults foreacherrorstated. |
Demonstratesexcellent understandingof error analysis by correctly identifyingallsourcesoferrorandthediscusses the effect they each have.
Detailled scientific suggestionsonhowtoimprovethereliability of results for each error stated. |
|
6a. Observe andPlan(10marks) |
6a)1mark 6b)3marks 6c)3marks 6d)3marks |
7.Academic writing andreferencing |
Rangingfromaverypoor to an overly simplistic/inappropriate academic style with significant deficiencies in expressionorformatthat may pose obstacles for the reader. No or limited use of sourcestosupporta point. Noorminimalattemptto useHarvardreferencing |
Simplistic academic style with somedeficienciesinexpression or format that may pose obstacles for the reader. Limited use of sources to support a point. Only 1 type of source used. Minimal attempt touseHarvardreferencingwith some errors. |
Competently written, with only minor lapses from standard grammar/spelling,whichdonot impede the overall meaning. An appropriate format is used andacademicstyleisemerging. Reasonable use of sources to support points with 3 or 4 sources of at least 2 types. Uses Harvard referencing throughout,thoughtheremay be some formatting errors. |
Well written, with standard spelling and grammar in a readable style with an acceptableformat.Consistent use of academic style. Some minornon-impedinglanguage errors. Appropriaterangeof sources, wellorganisedandusesHarvard referencing with only minor formatting errors from 4 or more different sources. |
Excellently written, with minimal errors in spelling and grammar. Academicstyleisappliedskillfully and appropriately. Excellentrangeofsources,with clear links between all sections and logical to the reader. Uses Harvard referencing with no/isolatederrorsfrom5to10 different sources. |
|
TOTAL |
/50 |