Quando o assunto é o estudo da Química, a chamada ionização costuma ser uma verdadeira pedra no sapato dos vestibulandos. Isso ocorre porque esse tema – que é muito recorrente nas provas de vestibular – requer conhecimento de conceitos químicos e matemáticos....
A pandemia global do novo coronavírus (Covid-19), registrada a partir do mês de março, tem feito com que instituições de ensino de todo o mundo suspendam as aulas por tempo indeterminado, uma vez que ficar em casa e evitar aglomerações são recomendações essenciais...
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