Predict, then test whether or not the substance settles out of the water Predict, then test whether or not the substance can be separated from water with a filter. Test whether or not particles in the mixture scatter light. After students have completed observing, testing and recording, provide each group with a solutions and suspensions chart. Groups should use their observations and this chart to decide what type of mixture each sample is. Students in their groups should also use the scale tool to identify the scale of size of the particles in the different mixtures. Ask groups to share their conclusions and the evidence they used to make their conclusions. Students can agree or disagree with each other about the classifications. Facilitate the students in coming to consensus that the salt and food coloring mixtures are solutions and that the dirt mixture is a suspension.
Predict, then test whether or not the substance settles out of the water Predict, then test whether or not the substance can be separated from water with a filter. Test whether or not particles in the mixture scatter light. After students have completed observing, testing and recording, provide each group with a solutions and suspensions chart. Groups should use their observations and this chart to decide what type of mixture each sample is. Students in their groups should also use the scale tool to identify the scale of size of the particles in the different mixtures. Ask groups to share their conclusions and the evidence they used to make their conclusions. Students can agree or disagree with each other about the classifications. Facilitate the students in coming to consensus that the salt and food coloring mixtures are solutions and that the dirt mixture is a suspension.
SubstancesTeacherMaterials2012.docx