In this physical science lab, students investigate whether or not chewing gum should be considered eating. Students plan their own experiments for this lab. They use the law of conservation of mass to reason that the portion lost of the original mass of gum must be swallowed. Students determine the portion of original mass of gum. A student lab sheet and CER template are provided.

Learn about concentrations of solutions. If you brew tea or coffee for too long, it gets really strong, bitter, and dark. But if you add water, you can lessen its strength. So, when we talk about how strong our coffee is, we are really talking about CONCENTRATION. Like stirring a teaspoon of sugar into a cup of tea, solids can have a concentration in a liquid, but first, they need to be able to dissolve into a solution (solubility). But, is there a limit to how much of a solid the solution can take in? Through some sweet treats, you can eat, let's explore the scientific concepts of concentration, solubility, and supersaturated solutions. I promise you it's going to ROCK! Developed for students in grades 6-10.

After reading about physical properties of matter, I wanted students to have a chance to experience what the different vocabulary words meant and gain some common experiences so that we would be able to reference these experiences in later classes. My students were also struggling with the new vocabulary words as well as the idea that melting temperature was a physical property. These six stations are designed for students to rotate through independently in small groups. The teacher will be at the gallium melting demonstration station throughout the activity while also monitoring students' progress around the room. At each station students will create a Frayer Model for the vocabulary term that includes the term, definition, a drawing, a synonym, an example, and a sentence that uses the term.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values. Arabic Language.