UNIT 2: PRACTICAL SCIENTIFIC PROCEDURES AND TECHNIQUES [40157986 - HAJRAH ALI. MANDEEP MANGAT JUNE 15
D: REVIEW PERSONAL DEVELOPMENT OF SCIENTIFIC SKILLS FOR LABORATORY WORK.
HOW AM I DOING?
D.P7 SUMMARISE KEY PERSONAL COMPETENCIES DEVELOPED IN RELATION TO SCIENTIFIC SKILLS UNDERTAKEN.
SKILLS I KNEW AT THE BEGINNING OF THE UNIT: The skills gained can allow me to work independently and safely
with confidence.
At the beginning of this unit there were skills I had already knew which I applied to help me during the practical in
this unit. These skills are:
To weigh a solid, substance to a full gram and to give my figure to the amount of decimal place required i.e.,
2d.p.
To pour liquid into beakers without spilling the liquid or overflowing the beaker as I can accurately measure
the amount of liquid I need to use during my practical.
I knew how to draw graphs accurately using a suitable scale and the correct x, and y axis.
I knew how to work according to the health and safety rules when in a lab, knowing what to do and what not
to do, by working reasonably and carefully.
I knew how to work accordingly with my partner during the practical, using clear and effective
communication, and to work as a team.
I knew how to write up a report using the correct layout, and appropriate scientific language.
SKILLS I GAINED DURING THE UNIT:
A B C
How to calibrate a weighing Calibrating thermometer digital I learnt how to length a capillary
scale Calculating gradient and cooling tube by putting it in flame using
How to calibrate a colorimeter curve a Bunsen burner.
Reading the meniscus reading at How to draw a tangent and how Producing a chromatogram on a
eye level and preventing a to work my calculations using TLC plate
parallel error from occurring the tangent. Leaving enough space for the
Making a standard solution How to plot a cooling curve solvent and spots so they can
Working out unknown solutions taking recordings after every move along the mobile phase.
Dilutions, we taught how to minute using a stopwatch. We learnt the skills of putting
accurately make dilutions by our chromatography paper into
calculating using a dilution ninhydrin and then drying the
equation. paper with a hair dryer
I also learnt how to make a Making sure that there is a gap
standard solution by following between each spot evenly.
instruction and using out Using a capillary tube to pick up
dilution calculation to 1m. the substance and spot it on to
Recording and analysing results a chromatogram.
Working in pairs key I have learnt how to calculate Rf
communication. values after producing my
I can use a graduated pipette to chromatograms correctly.
transfer measured amount of I learnt how to separate
liquids and using a pasture compounds using a TLC Plate,
pipette. which I had never done before.
I have learnt how to use a
colourimeter machine this was
my 1st time using it which I am
now very confident in using.
, UNIT 2: PRACTICAL SCIENTIFIC PROCEDURES AND TECHNIQUES [40157986 - HAJRAH ALI. MANDEEP MANGAT JUNE 15
SKILLS WHICH I CAN DEVLOP AND IMPROVE FURTHER FOR THE FUTURE:
I can improve on my time management and organisation skills for this unit making sure everything is up to
date and in the future for other units to start the work on the day its given, to improve I could make a
timetable scheduling appropriate times against my college timetable.
Next time during practical’s I, while analyse my skills more deeply applying them to other experiments in
different units.
Next time I would like to make sure I have got the right concentration of dilutions by preventing parallax
errors and making sure that I can see the meniscus line.
In assignment A, B skills we learnt help both practical is as they both required us to draw graphs, when making a
standard solution we learnt to calibrate, calculate the solution using a dilution equation and mixing of solutions of
concentration and water. Using our graphs skills, we determined the unknown solution, we correctly label our axis
and made sure that the graph was ¾ a page so that we can evenly separate and spread out our results by going up in
a suitable scale. In assignment be we learnt how to draw a tangent on the graph and working out the answer by
using our scale.
Overall, I am confident with skills I have learnt and can achieve these independently without the support and
supervision of my teacher and with minimal guidance. I know the basic Personal protective equipment needed for
the practical’s I carry out and the health and safety risks following the under the rules of COSHH. I can organise my
workspace and make sure it is clean, tidy, and presentable always. I make sure once I am done with a piece of
equipment and chemical, I put it away.
D.M4 ANALYSE SKILLS DEVELOPED AND SUGGEST IMPROVEMENTS TO OWN PRACTICE.
ASSIGNMENT A:
We made sure that the solution was accurately diluted, by first calculating how much liquid concentration we need,
so that no time is wasted, and we can continue with the experiment without using up key time. During practical’s
we wore the correct PPE. We then measured our solution in a volumetric flask and made sure that the reading was
correct by following the graduated lines and the bottom of the meniscus line, I feel like that I may have missed read
the meniscus line which I later corrected showing it to my partner, next time when carrying out a similar practical I
would like to make sure that I am perfect and exact at looking at the meniscus line and measuring it correctly and
making sure that there is no parallax error in my reading. We used a calorimeter to check its absorbance level to
concentration. To calibrate the colorimeter, we had poured water into cuvettes and put these inside using the red
light, we made sure that the water was reading 0.000, we recalibrated if the results were not showing correctly. We
repeated the results three time and calculated an average, we check with our partners and made sure we both
agreed on the readings. We made sure we had chosen a reasonable wavelength for the solutions, we set the
colorimeter on red. The much more concentrated the solution is the lighter it absorbs and less it transmits as the
solution is of a higher concentration. We made sure that the cuvette was clean and the side that was more
transparent was faced towards the front. If it does not pass through the results will not be exact. We made sure that
all our results were to the same amount of decimal place so that the overall results were accurate and were to the
same amount of decimal point as our experimental results. We made sure that all the equipment being used within
the experiment were sterilised and cleaned approximately to prevent any cross contamination of other solutions.
We also made sure that our graph was ¾ of a page so that we were able to read it much clearer and that the results
were spaced approximately, and they made a specific pattern to determine unknown concentrations too and to
follow the pattern of the results. We had to think which kind if pattern we needed for our results. We learnt how to
use a colourimeter and how to calibrate It by using a sample and pressing the CAL button. We used water as out
sample to make sure the colorimeter showed 000.
We may have not waited long enough when reading our results in the cuvette which may have affected our readings
and results so next time when carrying out the practical I will have learnt what to do and what not do and my results
D: REVIEW PERSONAL DEVELOPMENT OF SCIENTIFIC SKILLS FOR LABORATORY WORK.
HOW AM I DOING?
D.P7 SUMMARISE KEY PERSONAL COMPETENCIES DEVELOPED IN RELATION TO SCIENTIFIC SKILLS UNDERTAKEN.
SKILLS I KNEW AT THE BEGINNING OF THE UNIT: The skills gained can allow me to work independently and safely
with confidence.
At the beginning of this unit there were skills I had already knew which I applied to help me during the practical in
this unit. These skills are:
To weigh a solid, substance to a full gram and to give my figure to the amount of decimal place required i.e.,
2d.p.
To pour liquid into beakers without spilling the liquid or overflowing the beaker as I can accurately measure
the amount of liquid I need to use during my practical.
I knew how to draw graphs accurately using a suitable scale and the correct x, and y axis.
I knew how to work according to the health and safety rules when in a lab, knowing what to do and what not
to do, by working reasonably and carefully.
I knew how to work accordingly with my partner during the practical, using clear and effective
communication, and to work as a team.
I knew how to write up a report using the correct layout, and appropriate scientific language.
SKILLS I GAINED DURING THE UNIT:
A B C
How to calibrate a weighing Calibrating thermometer digital I learnt how to length a capillary
scale Calculating gradient and cooling tube by putting it in flame using
How to calibrate a colorimeter curve a Bunsen burner.
Reading the meniscus reading at How to draw a tangent and how Producing a chromatogram on a
eye level and preventing a to work my calculations using TLC plate
parallel error from occurring the tangent. Leaving enough space for the
Making a standard solution How to plot a cooling curve solvent and spots so they can
Working out unknown solutions taking recordings after every move along the mobile phase.
Dilutions, we taught how to minute using a stopwatch. We learnt the skills of putting
accurately make dilutions by our chromatography paper into
calculating using a dilution ninhydrin and then drying the
equation. paper with a hair dryer
I also learnt how to make a Making sure that there is a gap
standard solution by following between each spot evenly.
instruction and using out Using a capillary tube to pick up
dilution calculation to 1m. the substance and spot it on to
Recording and analysing results a chromatogram.
Working in pairs key I have learnt how to calculate Rf
communication. values after producing my
I can use a graduated pipette to chromatograms correctly.
transfer measured amount of I learnt how to separate
liquids and using a pasture compounds using a TLC Plate,
pipette. which I had never done before.
I have learnt how to use a
colourimeter machine this was
my 1st time using it which I am
now very confident in using.
, UNIT 2: PRACTICAL SCIENTIFIC PROCEDURES AND TECHNIQUES [40157986 - HAJRAH ALI. MANDEEP MANGAT JUNE 15
SKILLS WHICH I CAN DEVLOP AND IMPROVE FURTHER FOR THE FUTURE:
I can improve on my time management and organisation skills for this unit making sure everything is up to
date and in the future for other units to start the work on the day its given, to improve I could make a
timetable scheduling appropriate times against my college timetable.
Next time during practical’s I, while analyse my skills more deeply applying them to other experiments in
different units.
Next time I would like to make sure I have got the right concentration of dilutions by preventing parallax
errors and making sure that I can see the meniscus line.
In assignment A, B skills we learnt help both practical is as they both required us to draw graphs, when making a
standard solution we learnt to calibrate, calculate the solution using a dilution equation and mixing of solutions of
concentration and water. Using our graphs skills, we determined the unknown solution, we correctly label our axis
and made sure that the graph was ¾ a page so that we can evenly separate and spread out our results by going up in
a suitable scale. In assignment be we learnt how to draw a tangent on the graph and working out the answer by
using our scale.
Overall, I am confident with skills I have learnt and can achieve these independently without the support and
supervision of my teacher and with minimal guidance. I know the basic Personal protective equipment needed for
the practical’s I carry out and the health and safety risks following the under the rules of COSHH. I can organise my
workspace and make sure it is clean, tidy, and presentable always. I make sure once I am done with a piece of
equipment and chemical, I put it away.
D.M4 ANALYSE SKILLS DEVELOPED AND SUGGEST IMPROVEMENTS TO OWN PRACTICE.
ASSIGNMENT A:
We made sure that the solution was accurately diluted, by first calculating how much liquid concentration we need,
so that no time is wasted, and we can continue with the experiment without using up key time. During practical’s
we wore the correct PPE. We then measured our solution in a volumetric flask and made sure that the reading was
correct by following the graduated lines and the bottom of the meniscus line, I feel like that I may have missed read
the meniscus line which I later corrected showing it to my partner, next time when carrying out a similar practical I
would like to make sure that I am perfect and exact at looking at the meniscus line and measuring it correctly and
making sure that there is no parallax error in my reading. We used a calorimeter to check its absorbance level to
concentration. To calibrate the colorimeter, we had poured water into cuvettes and put these inside using the red
light, we made sure that the water was reading 0.000, we recalibrated if the results were not showing correctly. We
repeated the results three time and calculated an average, we check with our partners and made sure we both
agreed on the readings. We made sure we had chosen a reasonable wavelength for the solutions, we set the
colorimeter on red. The much more concentrated the solution is the lighter it absorbs and less it transmits as the
solution is of a higher concentration. We made sure that the cuvette was clean and the side that was more
transparent was faced towards the front. If it does not pass through the results will not be exact. We made sure that
all our results were to the same amount of decimal place so that the overall results were accurate and were to the
same amount of decimal point as our experimental results. We made sure that all the equipment being used within
the experiment were sterilised and cleaned approximately to prevent any cross contamination of other solutions.
We also made sure that our graph was ¾ of a page so that we were able to read it much clearer and that the results
were spaced approximately, and they made a specific pattern to determine unknown concentrations too and to
follow the pattern of the results. We had to think which kind if pattern we needed for our results. We learnt how to
use a colourimeter and how to calibrate It by using a sample and pressing the CAL button. We used water as out
sample to make sure the colorimeter showed 000.
We may have not waited long enough when reading our results in the cuvette which may have affected our readings
and results so next time when carrying out the practical I will have learnt what to do and what not do and my results
