Other
BTEC APPLIED SCIENCE UNIT 2 - Learning aim D
- Institution
- PEARSON (PEARSON)
D: Review personal development of scientific skills for laboratory work. Grade Distinction.
[Show more]
1 review
By: ivandrago • 1 year ago
Content preview
Emilia HawkinsUnit 2: Practical Scientific Procedures and Techniques
D: Review personal development of scientific skills for laboratory work.
Colorimetry:
New skills I have learned.
From doing experiments that use colorimetry I learned how to use a digital colorimeter. This enables
me to measure the absorbance of light that passes through a liquid and therefore be able to
calculate the concentration of a solution. I learned how to select an appropriate wavelength for the
colorimeter because the wavelength of the light transmitted has to be the same as that absorbed by
the solution. From the experiment, I learned how to make solutions of copper sulphate that had
varying concentrations. I then used my results to produce a graph which enabled me to estimate the
concentration of a sample which had a known absorbency.
How did I accept responsibility for the quality of my work.
I was able to accept responsibility for the quality my work by making sure that instructions were
followed carefully and accurately. Due to this practical taking place whilst working with 1-2 other
people, I had to make sure that those working with me were correctly following the instructions
given to us. I was able to determine that my results were accurate by comparing them to my peers
and therefore can take responsibility of ensuring that my work was at a high quality. Equally, if I had
made any mistakes and my results were incorrect I can work out what I was doing wrong then
correct it to produce higher quality results.
How did I follow health and safety regulations.
I followed health and safety regulations by wearing goggles as copper sulphate can cause severe eye
irritation. I also was careful when handling liquids near the colorimeter because it is a piece of
electrical equipment that could cause an electric shock if liquid is spilled onto it.
How did I communicate and cooperate with others.
This experiment was completed in small groups so I had to communicate with the other people in
my group. By communicating this way with my peers, I made sure that the other people in my group
were following instructions carefully to produce results which were accurate and consistent. I was
able to compare my results with the results from other groups to check for any inconsistencies or
mistakes.
Strengths.
I was able to correctly use the colorimeter and produce results that followed a trend. I was able to
compare my results with my peers to determine if my results were incorrect. From the graph I
produced, I could estimate the concentration of an unknown sample of copper sulphate.
Weaknesses.
There were varying levels of adherence to the method and differing levels of competencies around
using he apparatus by the group, this may have introduced some discrepancies in the results and
therefore the groups conclusions. There was also a time limitation on performing the experiment
which only allowed for one set of results to be collected.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller emiliahawkins. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now