BTEC Applied Science Unit 6B - Project planning (Distinction)
30 views 0 purchase
Course
Unit 6 - Investigative Project
Institution
PEARSON (PEARSON)
Exemplar assignment for Unit 6B, the second assignment in BTEC Applied Science Unit 6 (Investigative Project), which involves making a plan for your investigation. I chose to base my Unit 6 project on how concentration affects the rate of diffusion. This assignment was awarded a DISTINCTION. If yo...
B: Produce a plan for an investigative project based on the proposal
Project planning
Introduction
In this assignment, I will be generating a working plan for my experiment on how different concentrations of
hydrochloric acid affect the rate of diffusion within agar, whilst taking into account any constraints and health and
safety considerations.
Schedule
Materials and equipment
● 1% phenolphthalein solution
● Agar powder
● Balance x 1
● Bunsen burner x 1
● 100ml conical flask x 3
● 100ml beaker x 4
● Stopclock x 1
● Clear ruler x 1
● Distilled water
● 2M hydrochloric acid
● Scalpel x 1
, Unit 6: Investigative Project
B: Produce a plan for an investigative project based on the proposal
● 50ml measuring cylinder x 4
● Stirring rod
Method
1. Prepare different concentrations of hydrochloric acid using the serial dilution method (see Appendix 1.1).
2. Prepare 2x2 cm3 agar cubes (see Appendix 1.2).
3. Pour 50 ml of 0.5M hydrochloric acid into an 80 ml beaker.
4. Place one agar cube into the beaker and immediately start the stopclock.
5. Stop the stopclock when all of the pink colour has disappeared from the agar.
6. Record the time taken for the agar to turn colourless in a results table.
7. Repeat steps 1-6 for the remaining concentrations of hydrochloric acid.
8. Calculate the mean time taken for agar to go colourless for each concentration.
𝐷𝑖𝑓𝑓𝑢𝑠𝑖𝑜𝑛 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒
9. Calculate the rate of diffusion by using the formula:
𝑇𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 𝑓𝑜𝑟 𝑐𝑜𝑙𝑜𝑢𝑟 𝑐ℎ𝑎𝑛𝑔𝑒 𝑡𝑜 𝑜𝑐𝑐𝑢𝑟
Figure 1: Equipment setup
Risk assessment
Hazard Risk Prevention measures Action taken in event of risk
occurring
2M hydrochloric Severe skin burns, eye Wear PPE (gloves, protective Swallowed: Rinse mouth and do not
acid damage [Alpha clothing, eye protection) induce vomiting.
Chemicals, 2021] [Alpha Chemicals, 2021]
Skin: Thoroughly rinse skin with
Wash all exposed external water.
body areas thoroughly after
handling [Alpha Chemicals, Eyes: Rinse with water for several
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 or Stuvia-credit 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 unknvwnuser06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.54. You're not tied to anything after your purchase.
