AQA Required Practical - Measuring the rate of a reaction by loss of mass

AQA Required Practical for GCSE combined science or chemistry. Investigate how changes in concentration affect the rates of reactions by both measuring the volume of a gas produced and monitoring a change in colour or turbidity.
Edexcel Core Practical
Practicals are 15% of your exam grade, this could be the difference between a grade 4 and a grade 5 or the difference between grade 7 and grade 9. There isn’t a large amount of content but there are a lot of skills that can be tested, to help you with this I’ve made videos of all the practical and written a workbook full or exam style questions.

I want to help you achieve the grades you (and I) know you are capable of; these grades are the stepping stone to your future. Even if you don't want to study science or maths further, the grades you get now will open doors in the future.




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Disclaimer; You should not carry out any of these practical’s without carrying out a full risk assessment of your own first.

I am human, and I make mistakes, please point out any that you find and there is no need to follow that with a load of abuse.

PhET Interactive Simulations
University of Colorado Boulder

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[marialivingston]

You are such an empowering woman, empowering women to love science. I feel as though we are well under represented in the science community! Good on you!

[cfecrystal]

Oh my good, I love your videos. You inspired me to write this comment and talk about how well I did on my exam. I got an A!!!!
Thank you so much, I love your cat by the way.
Also you remind me of my SST teacher, I kinda hate her but your different >:D
I just love how you help us with your videos!!
I really love the paw and maybe next time you can improve on your writing a bit more.
I love it but the arrows just hurts my eyes.


Thank you so much.
Your my inspiration.

[patriceolivier]

If they ask to calculate the total loss in mass of the contents from the graph how are you going to do that

[laiwei]

this video really helped me a lot in designing experiment. thank you ！！！

[humphrey]

1:52 2:22 2:52 3:22 3:52 4:22 4:52 5:22

[tgwtg]

Could you please make a video on tips on how to answer investigation questions. So when they ask for variables or a reason why a specific instrument was used? Thank you!

[selamtegegn]

Thank you so much, you are just amazing x

[poeticxrealm]

Is accurate the same as precise? So if they said, why would you use a data logger instead of a thermometer could you say it is more precise?