After we worked through a model together of salt and water, students were to create their own models for the remaining three ingredients...
We'll be figuring out the strengths and weaknesses to each of their models and come to an agreement about what we figured out!
We'll be figuring out the strengths and weaknesses to each of their models and come to an agreement about what we figured out!
After discussing all the models for each ingredient before and after it entered the water, here's what we figured out:
1. Everything is made of pieces--solids and liquids. The water and vinegar MUST be made of pieces because they fit through a coffee filter, too.
2. Water pieces and vinegar pieces must be smaller than the pieces of everything else.
3. When something dissolves, it breaks down into smaller pieces and it spreads out evenly in the liquid it dissolves in. If it didn't spread out evenly, we'd still see all those tiny little pieces clumped together.
1. Everything is made of pieces--solids and liquids. The water and vinegar MUST be made of pieces because they fit through a coffee filter, too.
2. Water pieces and vinegar pieces must be smaller than the pieces of everything else.
3. When something dissolves, it breaks down into smaller pieces and it spreads out evenly in the liquid it dissolves in. If it didn't spread out evenly, we'd still see all those tiny little pieces clumped together.
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