Emma rubs suntan lotion into her hands. At first her hands stay cool. After the cream is absorbed, her skin begins to get warm. Why do her hands stay cool while there is suntan lotion between them

Answer :

Explanation:Suntan lotion basically evaporates. Sun tan lotion contains a chemical called acetone. So when the sun tan lotion is appilied, her hands feel cool, and as when it evporates in air it becomes warm again.    

Additional information: Acetone is also found in Nailpolish remover, medicinal balms, sanitzers etc.