Mystery #4Tier 2-3mixtures / solutions
How does soap wash away grease that water alone can't shift?
Try rinsing greasy hands with water alone and the grease just sits there. Add a little soap and it lifts away in seconds. Water couldn't budge it, so what does soap do that plain water can't?
Your guess
What's your hunch about how soap grabs greasy oil that water can't touch?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
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