Section outline

  • Ata marie Year 9s

    Learning objectives

    Investigating concepts of solubility, concentrations, dilutions, and techniques to separate mixtures

    Success Criteria:

    • Communicate scientific investigations accurately using scientific conventions
    • Conduct a simple experiment to investigate solubility of 2 different solutes in water
    • I can compare and explain concentration of solutions by creating a dilution series using precise skills in measuring and lab skills
    • I can explain the difference between saturation and supersaturation
    • I can apply various lab techniques to separate a mixture (specifically decantation, filtration, evaporation and distillation)
    • I can write a step by step methodology
    • I can explain, through the separating technique “chromatography” how the different solubility of substance allows us to identify and isolate substances in a mixture
    • I can draw graphs for continuous and discontinuous data, using scientific conventions

    Activities:

    1. Teacher demo- Fractional distillation of water and ethanol
    2. Teacher demo- Instant crystallisation of supersaturated solution of sodium acetate trihydrate
    3. Create a dilution series and explain the ratio of particles in each test tube
    4. Separating a mixture of oil, sand, salt and water using decantation, filtration, evaporation, and distillation
    5. Writing Methodology worksheet
    6. Seperate mixtures using chromatography and explain the degree of solubility of mixtures in a solvent
    7. Practise drawing bar graphs and scatterplots with line of best fit and peer marking 

    Further Learning:
    Resources are posted on Google Classroom and Education Perfect