Testing a Leaf for Starch

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Science Mindmap am Testing a Leaf for Starch, erstellt von dcsta am 05/10/2014.
dcsta
Mindmap von dcsta, aktualisiert more than 1 year ago
dcsta
Erstellt von dcsta vor etwa 10 Jahre
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Zusammenfassung der Ressource

Testing a Leaf for Starch
  1. Place leaf into a beaker of boiling water, this will soften leaf tissues
    1. 2) Remove leaf from water and place with boiling tube, and cover the leaf with alcohol (ethanol)
      1. 3) Place boiling tube in beaker of boilng water
        1. 4) The alcohol will boil and remove any chlorophyll from the leaf
          1. 5) When leaf is white, remove from boiling alcohol and place in water, to rehydrate
            1. 6) Spread leaf onto white tile and cover with iodine
              1. Equipment
                1. Forceps
                  1. Boiling tube
                    1. Iodine
                      1. White tile
                        1. Ethanol
                          1. Leaf
                            1. Boiling water
                            2. 7) If it turns black, starch is present. If it is brown it is not
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