Nas aulas de Ciências, os alunos misturaram água com algumas substâncias para verificarem a solubilidade da água. Além disso, eles colocaram uma lamínula sob a superfície da água para verificar a tensão superficial. A lamínula permanece na superfície da água devido a uma fina membrana que se forma na superfície do líquido. Ao acrescentar o detergente, que é um agente tensoativo e que diminui a tensão superficial, a lamínula desce para o fundo do copo. no images were found
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