Dissolving a solid in a liquid depends on the interaction between ... Ask students if they think the coating will dissolve in water. Give each student an Activity Sheet (PDF). Students will record ...

RO water with a TDS below 100 mg/l may lack essential minerals, affecting taste and long-term health benefits. Essential minerals like calcium, magnesium, and potassium are necessary for health, and ...

Remind students that they have seen the particles of a liquid and solid interact when water dissolved the sugar from an M&M (Lesson 1.2). Explain that in this activity, students will investigate how ...

is used to separate a soluble solid from a liquid. For example, copper sulfate is soluble in water – its crystals dissolve in water to form copper sulfate solution. During evaporation ...

A TDS meter is used to measure the TDS in water. The TDS is Total Dissolved Solids, the concentration of solid dissolved in water. The TDS meter allows you to measure the quality and vital content ...