Unit 2- Practical Scientific Procedures and Techniques
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Unit 2: BTEC Applied Science Level 3 National Extended Diploma
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Unit 2- Practical Scientific Procedures and Techniques
Institution
PEARSON (PEARSON)
All 4 unit 2 assignments of applied science level 3 national extended diploma. Achieved grades distinction in 3 of the assignments and overall a merit in the unit. Overall course grade D*D*D.
Unit 2- Practical Scientific Procedures and Techniques
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CONCENTRATE ON
KEEPING UP YOUR
STANDARDS
UNDERTAKE TITRATION AND
CALORIMETRY TO DETERMINE THE
CONCENTRATION OF SOLUTIONS
Asraa Abbud
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, Calibration of instruments:
- Calibration of a scientific instrument helps to maintain accuracy of the instruments
required.
- The process involves using the instrument with known values.
Calibration of balance:
Equipment:
- Balance
- Range of weights
Method:
- Have a set of weights for the calibration.
- Put the weights on the balance with their mass set as the standard.
- If the weights are 1kg, you should get the set weight of 1kg on the balance.
- If not, then the balance must be set again to ZERO and check again.
Known mass Balance mass % difference Within tolerance
2 2 0 Yes
5 5 0 Yes
10 10 0 Yes
20 20 0 Yes
Method:
- put a 100cm3 beaker onto the analytical balance and tare it.
- fill your pipette, with a pipette filler, to the mark (25cm 3) with water, then
transfer it to the beaker.
- Record the mass of the water.
- Water has a density of 0.977g/cm3
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