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Prac Scaffold - Modelling Diffusion and Osmosis

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Year 11BIO3: Modelling Diffusion and Osmosis
Using Dialysis Tubing
A Scientific Report
A scientific report is a text type, just like a narrative, that scientists use to write up any experiments they
have done. It has a set layout – title, aim, hypothesis (pronounced “hi-poth-a-sis”), materials list, method,
results, discussion and a conclusion.
Name: ______________________
Date: ___/___/___
Title of my experiment:
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Aim – what are you trying to find out? Start with the word ‘To…’
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Hypothesis – what is your educated prediction in relation to your aim? “If _______, then _________.”
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Equipment List – what materials do you need and in what amounts? E.g. 1 slice of bread
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Risk Assessment Table
Material/Chemical
Hazard
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Glassware
Breakages can have
sharp edges and can
cause cuts to the skin
Control
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Do not use broken
glassware
Handle fragile
equipment with care
Method – how will you carry out your experiment? Use numbered steps and write in past tense!
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2D diagram of apparatus (set up used):
Results
a) What was the initial weight of the dialysis tubing with solution? ………………………….
b) What was the final weight of the dialysis tubing with solution? ………………………….
c) What were some qualitative observations (descriptive)? Use the table to guide you.
Initial Colour of Solution
Inside dialysis
tubing
Outside dialysis
tubing
Final Colour of Solution
Inside dialysis
tubing
Outside dialysis
tubing
Discussion (Do not use first person and keep this section concise)
a) Trends and patterns – discuss your results in relation to your aim
(state your results and why you think this result was achieved)
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b) Validity – Why was iodine used? Why was starch solution used? Why was dialysis tubing used?
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c) i) Strengths - what were the strengths of your experimental method?
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c) ii) Areas for improvement (aka weaknesses) – What were the limitations? How could these
limitations be improved in the future?
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Conclusion – summarise your findings in relation to your aim
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