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Practical plan for Unit 2: Aim B

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2023/2024 Written for academic year
Institution PEARSON (PEARSON)
Module U2 Practical Scientific Procedures and Techniques
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This is part of Aim B. This document includes the practical plan ONLY. This is part of the PASS criteria. Aim To construct cooling curves and accurately study the rate of cooling of paraffin wax and stearic acid using calibrated equipment. Variables Dependent: Temperature Independent: Time Controls: Mass of samples, type of thermometer, medium in which cooling is occurring in

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Aim
To construct cooling curves and accurately study the rate of cooling of paraffin
wax and stearic acid using calibrated equipment.




Equipment

- Hot plate
- Ice
- Digital thermometer
- Timer
- Beakers
- Scales
- 50g paraffin wax
- 50g stearic acid
- Spatulas



Variables
Dependent: Temperature
Independent: Time
Controls: Mass of samples, type of thermometer, medium in which cooling is
occurring in
Risk assessment

Hazard Risk Precautions
Hot plate Burns, fire risk Handle with care and
turn off when not in use
Melted paraffin wax Burns Handle with care
Melted stearic acid Irritant Gloves, goggles
Glassware Breakages, cuts Handle with care




Brief method
- Place substance, either paraffin wax or stearic acid into beaker on
hot plate
- Allow solid to melt fully

- Place digital thermometer and record temp
- Place in ice bath and record temperature at 30s intervals
- Perform repeats

Document information

Study Level
BTEC
Subject
Applied Science
Uploaded on
September 7, 2023
Number of pages
3
Written in
2023/2024
Type
Essay
Professor(s)
Unknown
Grade
A+
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Complete Unit 2 Practical Scientific Procedures and Techniques (Aims A,B,C and D) *Distinction Awarded Unit*
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