lesson
Using Particle Models to Explain Conservation
Use particle models to explain why mass is conserved when substances are mixed or dissolved.

Use particle models to explain why mass is conserved when substances are mixed or dissolved.
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4 lessons
Learners will use particle diagrams to explain dissolving and the conservation of mass, and connect the particle model to the concept of atoms and molecules.
illustrate how matter is made up of particles that are too small to be seen such as air in a balloon.
compare the properties of substances before and after they are combined into a solution and demonstrate that matter is conserved in solutions; and