OCR 21st Century GCSE Chemistry (High) Controlled Assessment

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Rayyan100_
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Hi everyone,
I'm struggling a little on my high controlled assessment which is based on the rates of reaction between hydrochloric acid and copper carbonate (I am changing the concentration of hydrochloric acid.) I was wondering if anyone can answer my questions or link me to a website.
1) How does a gas syringe work? How much more precise is it compared to an inverted measuring cylinder for measuring how much carbon dioxide is produced.
2) How does a burette work? How much more precise is it compared to an inverted measuring cylinder for measuring how much carbon dioxide is produced.
3) How does a graduated pipette work? How much more precise is it compared to an inverted measuring cylinder for measuring the volume of hydrochloric acid.
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