Learning Aims:
  • Characterize resistance of plastic to acids, alkalis and solutions of salts
Materials:
  • Test tubes, clap stand , different kinds of plastic, cotton, metal and wood
    Suggestions for use:
    • Before the experiment, formulate your hypotheses about action of acids, alkalis and solutions of salts on plastic materials and natural substances
    • Carry out an experiment in which you will study the resistance of the above-mentioned substances to the action of acids, alkalis and solutions of salts.

    Fill the test tubes with different acids, alkalis and solutions of salts. Put a particular kind of plastic, cotton, metal and wood into each test tube. Write your findings into the table

    Possible questions: