Tag: solution

  • Investigation: Determine Molarity of Unknown Solution

    Investigation: Determine Molarity of Unknown Solution

    Students determine the mass of water beads after soaking them in solutions. They use the change in mass to determine the molarity.

  • Biological Magnification

    Biological Magnification

    This article discusses how toxic substances accumulate in top predators in an ecosystem, a phenomenon called biological magnification. This accumulation can have dire effects on those populations and can threaten the entire species with extinction. Students read background information on mercury and DDT and how those toxins are measured in PPM (parts per million). A…

  • Modeling Osmosis

    Modeling Osmosis

    This basic lab uses Deco-cubes to show how they change in size when soaked in salt water, distilled water, and tap water.