Applied Science Unit 2.4
Throughout this year i have completed all unit 2 experiments (titration, colorimetry,
Calorimetry and chromatography). This required me to apply information correctly such
as health and safety when doing the experiments and there were many other skills that I
learnt that have allowed me to work independently and accurately across all parts of
unit 2. completed a lot of research and various experiments in this unit to be
successfully complete unit 2 practical scientific procedures and techniques. The skills
I've learnt in this unit will largely help me as when i apply for university and degree
apprenticeships as the unit has given me significant independence and confidence in
my abilities and skills especially when it comes to practical work. In this review I will be
going through the new skills obtained, the strengths and weakness of the experiments
and the next stages i(n terms of career).
Titration skills, strengths and weaknesses-
Titration is a crucial technique in chemistry, and it involves the addition of solution of a
known concentration to another solution of unknown concentration until a reaction is
complete. Titration has allowed me to develop personal competencies that have not
only enhanced my knowledge and understanding of the technique, but it has also
improved my overall scientific abilities. I believe one of the key skills i have developed is
precision as titrations require careful measurements and accurate calculations to
achieve precise and reliable results, this skill has benefited heavily as I have been able
to perform precision across all the unit 2 experiments.
Another competency that has been sharpened through titration is my ability to problem
solve and patience. During the process various unexpected challenges may occur such
as colour changes in the solutions, changes in the ph or adding more than 25cm3 of hcl
into the sodium carbonate solution for example which may have disrupted the ranging
results. Regarding the skill of patience i had to develop this skill as during titrations it
may take a long time to achieve the results desired, so patience is and repeating the
experiment allows accuracy and precision which leads to reliable results. These
situations require quick thinking and analytical skills to troubleshoot and find solutions.
By experiencing these problems in titration, I believe that i have adapted competently
with finding solutions to the issues that may occur.
Due to the similar nature of the experiments in the unit many of the skills I learned will
be transferred to the other parts of the unit such as 2.2 and 2.3 (cooling curves and
chromatography).Some of these skills include knowing how to use the equipment’s and
understand how they work which would increase the chance of you be more accurate
and achieving reliable results, Understanding the risk and hazards that come with
, conducting the experiment and also knowing the precautions and how they help to
prevent the rosks and hazards, another skill is by identifying the strengths and
limitations of any method used, Knowing how to handle any data collection,
understanding and analysing calculations used within the experiments in order to
form a conclusion. Aside from this unit over the years to have developed knowledge and
skills in the health and safety (in which because of this unit I have developed in detail)
topic which is a critical skill that will not only benefit myself but others around in
ensuring their safety.
At the beginning of unit 2.1 I only had a range of competencies that I learnt and
understood:
• Understanding and calculating relative formular mass
• Data collection
• Knowing the use of PPE in experiments and its safety
• Ability to read off a balance
• Correctly measuring mass of powders, solutions and any solvents o the correct
decimal place and in grams
When I completed unit 2.1(titration I gained more skills such as:
• Able to calibrate equipment (balance, Glass pipette, volumetric flask meter)
• Identifying an endpoint of a titration using colour indicator (methyl orange)
• Carry out calculations using results from a titration equipment to determine the
concentration of a solution
• Understand why equipment needs to be rinsed if being reused in an experiment
to prevent contamination
• Setting up equipment correctly in all experiments
• Better communication with partner and teacher
• Better use of software’s such as excel for data handling and producing graphs
• Analysing burette readings
Throughout this year i have completed all unit 2 experiments (titration, colorimetry,
Calorimetry and chromatography). This required me to apply information correctly such
as health and safety when doing the experiments and there were many other skills that I
learnt that have allowed me to work independently and accurately across all parts of
unit 2. completed a lot of research and various experiments in this unit to be
successfully complete unit 2 practical scientific procedures and techniques. The skills
I've learnt in this unit will largely help me as when i apply for university and degree
apprenticeships as the unit has given me significant independence and confidence in
my abilities and skills especially when it comes to practical work. In this review I will be
going through the new skills obtained, the strengths and weakness of the experiments
and the next stages i(n terms of career).
Titration skills, strengths and weaknesses-
Titration is a crucial technique in chemistry, and it involves the addition of solution of a
known concentration to another solution of unknown concentration until a reaction is
complete. Titration has allowed me to develop personal competencies that have not
only enhanced my knowledge and understanding of the technique, but it has also
improved my overall scientific abilities. I believe one of the key skills i have developed is
precision as titrations require careful measurements and accurate calculations to
achieve precise and reliable results, this skill has benefited heavily as I have been able
to perform precision across all the unit 2 experiments.
Another competency that has been sharpened through titration is my ability to problem
solve and patience. During the process various unexpected challenges may occur such
as colour changes in the solutions, changes in the ph or adding more than 25cm3 of hcl
into the sodium carbonate solution for example which may have disrupted the ranging
results. Regarding the skill of patience i had to develop this skill as during titrations it
may take a long time to achieve the results desired, so patience is and repeating the
experiment allows accuracy and precision which leads to reliable results. These
situations require quick thinking and analytical skills to troubleshoot and find solutions.
By experiencing these problems in titration, I believe that i have adapted competently
with finding solutions to the issues that may occur.
Due to the similar nature of the experiments in the unit many of the skills I learned will
be transferred to the other parts of the unit such as 2.2 and 2.3 (cooling curves and
chromatography).Some of these skills include knowing how to use the equipment’s and
understand how they work which would increase the chance of you be more accurate
and achieving reliable results, Understanding the risk and hazards that come with
, conducting the experiment and also knowing the precautions and how they help to
prevent the rosks and hazards, another skill is by identifying the strengths and
limitations of any method used, Knowing how to handle any data collection,
understanding and analysing calculations used within the experiments in order to
form a conclusion. Aside from this unit over the years to have developed knowledge and
skills in the health and safety (in which because of this unit I have developed in detail)
topic which is a critical skill that will not only benefit myself but others around in
ensuring their safety.
At the beginning of unit 2.1 I only had a range of competencies that I learnt and
understood:
• Understanding and calculating relative formular mass
• Data collection
• Knowing the use of PPE in experiments and its safety
• Ability to read off a balance
• Correctly measuring mass of powders, solutions and any solvents o the correct
decimal place and in grams
When I completed unit 2.1(titration I gained more skills such as:
• Able to calibrate equipment (balance, Glass pipette, volumetric flask meter)
• Identifying an endpoint of a titration using colour indicator (methyl orange)
• Carry out calculations using results from a titration equipment to determine the
concentration of a solution
• Understand why equipment needs to be rinsed if being reused in an experiment
to prevent contamination
• Setting up equipment correctly in all experiments
• Better communication with partner and teacher
• Better use of software’s such as excel for data handling and producing graphs
• Analysing burette readings
