Posted on Feb 08, 2022
Year 9 investigating the effect of increasing surface area on the rate of reaction between marble chips and hydrochloric acid. Students also learn how to set up apparatus new to them.
It is quite difficult to set up this apparatus; filling up the measuring cylinder with water and turning it upside down into a trough of water without getting any air bubbles. I am always amazed at how quickly the students learn these techniques once demonstrated.
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