==Key Stage 4==
{{#ev:youtube|https://www.youtube.com/watch?v=oieXYuQm_xE}}
===Meaning===
Investigate the effect of the [[concentration]] of [[sugar]] [[solution]] on the [[mass]] of [[plant]] [[tissue]].
===MethodExperiment=======Variables====
*[[Independent Variable]] - The concentration of [[sugar]] [[solution]].
*[[Dependent Variable]] - The [[mass]] of [[plant ]] [[tissue]] at the end.
*[[Control Variable]]s - Volume of plant tissue. Surface area of plant tissue. Length of time the plant tissue is left in solution. Temperature of the solution.
#====Method===={| class="wikitable"|-|[[File:OsmosisPractical1.png|center|600px]]|-| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the equipment needed in this experiment.|} {| class="wikitable"|-|[[File:OsmosisPractical2.png|center|300px]]|[[File:OsmosisPractical3.png|center|300px]]|-| style="height:20px; width:200px; text-align:center;" |:1. Cut 11 6 equal volumes of plant tissue (potato).#:2. Dry the plant tissue with paper towel and [[measure ]] the [[mass ]] of each pieceusing an [[Electronic Balance|electronic balance]] or find their [[Volume (Space)|volume]] by [[measuring]] length, noting it downwidth and height with [[ruler]] and multiplying them together.#| style="height:20px; width:200px; text-align:center;" |:3. Use a [[Measuring Cylinder]] to measure 10cm<sup>3</sup> of 1.0M [[sugar]] [[solution]] and pour it into a [[Boiling Tube]].#:4. Repeat step 3 with 9cm8cm<sup>3</sup> of [[sugar]] [[solution]] and 1cm2cm<sup>3</sup> of distilled water to give 0.9M 8M [[sugar ]] [[solution]], then 8cm6cm<sup>3</sup> and 2cm4cm<sup>3</sup> of distilled water to give 0.8M 6M [[sugar]] [[solution]], repeating this pattern until there is 10cm<sup>3</sup> of 0.0M [[sugar]] [[solution]].#|}{| class="wikitable"|-|[[File:OsmosisPractical4.png|center|300px]]|[[File:OsmosisPractical5.png|center|300px]]|-| style="height:20px; width:200px; text-align:center;" |:5. Place one piece of plant tissue into each of the 11 6 [[Boiling Tube|boiling tubes]] leaving them for 12-24 hours (ensuring it is the same time for all).#| style="height:20px; width:200px; text-align:center;" |:6. Remove the pieces of plant tissue, drying them with a paper towel and measure their [[mass]].#|} :7. Plot a graph showing the concentration of [[sugar]] [[solution]] on the x-axis and the change in [[mass]] of plant tissue on the y-axis. ===References=======Edexcel====:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Biology core practicals; osmosis in potato slices, pages 22-23, GCSE Combined Science, Pearson Edexcel '']