viking Posted August 14, 2010 Share Posted August 14, 2010 Long ago I was in reception and had a selection of plastic transparent bottles. I filled them half with coloured water and half with coloured oil and sealed the lid. The oil and water separated to show 2 colours but when shaken the solutions mixed and formed the new colour. In time the liquids separated again. Does anyone know how to colour the oil so that it doesnt bleed into the water? Many thanks. Link to comment Share on other sites More sharing options...
suebear Posted August 14, 2010 Share Posted August 14, 2010 This happened to me by chance before we broke up. We had oil, water, funnels, food colouring, chilli flakes and glitter for them to experiment with. Now I'm not very good at science so am sure someone will come along and correct me but I thought that the oil always sat on top of the water. So if you colour the water (and not the oil) when you shake the bottle the water colour will mix with the yellow of the oil hence red and yellow making orange, blue and yellow making green etc. There should be more technical thoughts out there but well it's a start for you! Link to comment Share on other sites More sharing options...
Inge Posted August 14, 2010 Share Posted August 14, 2010 we never coloured the oil, just the water.. used baby oil if we didn't want the yellow oil... wondering if artists oil based paints would do it? not tried, but thinking aloud here... Inge Link to comment Share on other sites More sharing options...
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