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Why does soap easily remove fats from metalware and glassware but not from plastic? Tom

First of all – this is a correct observation, as this problem does indeed exist: washing

calendar 17.5.2012
reading-time 3 minutes

What is capillary action and how is it affected by gravity? Ariel & Michal

Capillary action (or capillarity) describes the ability of a liquid to flow against

calendar 11.3.2012
reading-time 3 minutes