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Washing Up Liquid

Hi,
For my A2 Level Physics Coursework Investigation (OCR B), I'm thinking of investigating how washing up liquid affects the boiling point and/or evaporation of water. I'm having a bit of trouble finding anything out there on the world wide web, and just wondered if anybody here knew anything at all, or did anything similar for their coursework? :confused:

Thanks

Sam

Reply 1

W0nker

Hmmm... perhaps you could look at the specific heat capcity to calculate the energy transfered (E = m*c*change in temperature) . Maybe heat the water with some kind of a metal and measure the power (current * voltage) used to heat the metal (can't remember the name of this equipment) and then use power = energy / time so you would have to time it for a certain period. So from that you can work out the energy transferred with/without washing up liquid. Did a similar experiment in lesson just not with washing up liquid. Just a few ideas.