Big Idea:In this lesson, students examine how mixing baking soda and vinegar results in new substances. They also discover that the beginning and ending mass of this chemical reaction remains the same.
Big Idea:What is a mixture? What is a solution? How do you tell the difference between the two? Students actively mix, filter, and evaporate, to add to their growing wealth of knowledge about the properties of matter.
Big Idea:How do scientists use the properties of matter to identify substances? Students identify the crystals that result from their evaporation test, and use their knowledge of the properties of matter to try to categorize a new substance.