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In today's video lesson, we will learn how matter can occur in nature. Did you know that calling a substance “pure” is a mistake, as you are committing a pleonasm? Check out this and much more! Want to learn more about the subject? Brazil School Compound Substances - http://brasilescola.com/quimica/subst... Pure Substances and Mixtures - http://brasilescola.com/quimica/mistu... Chemistry - http://brasilescola.com/quimica/ Mundo Educação Substances and Mixtures - http://mundoeducacao.com/quimica/subs... Homogeneous and Heterogeneous Mixtures - http://mundoeducacao.com/quimica/mist... Classification of Heterogeneous Mixtures - http://mundoeducacao.com/quimica/clas... Chemistry - http://mundoeducacao.com/quimica/ Alunos Online Mixtures and Pure Substances - http://alunosonline.com.br/quimica/mi... Types of Mixtures - http://alunosonline.com.br/quimica/ti... Chemistry - http://alunosonline.com.br/quimica Kids School Mixtures - http://escolakids.com/ciencias/mistur... Substances - http://escolakids.com/ciencias/substa... Chemistry Manual Mixtures and pure substances - http://manualdaquimica.com/quimica-ge... Types of mixtures - http://manualdaquimica.com/quimica-ge... Follow us: Brasil Escola: http://www.brasilescola.com/ Facebook: / brasilescola Instagram: / brasilescolaoficial