Monday, September 22, 2014

Red Cabbage pH Indicator Lab

adding the red cabbage indicator to various liquids

Today we has some fun testing the pH levels of various liquids.  We created a simple indicator by boiling red cabbage.  When the strained juice was added to the liquids, it changed its color depending on the pH level.  Acids were red/purple and bases were blue/yellow.  The pH of a soil is important because it affects its fertility (the ability for plants to receive nutrients from it).

the color of the liquid after the indicator was added helped us determine the approximate pH level

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