For children in Grade 7 learning about matter and energy.
From the Curriculum:
By exploring the distinction between pure substances and mechanical mixtures and solutions, students will come to recognize that most matter is either a solution or a mechanical mixture – including most foods and drinks and many medicines, cosmetics, building materials, and cleaning agents.
Matter can be classified according to its physical characteristics.
The particle theory of matter helps to explain the physical characteristics of matter.
Pure substances and mixtures have an impact on society and the environment.