Dissolving

Duration: 1 Week 3½ Hours
NS CAPS, Page 15 and 54

After the completion of Topic 1 the learners will be able to:

  • explain what factors affect the rate of dissolving
  • investigate, measure and draw graphs of factors affecting the rate (time taken) of dissolving a solute, including
    • in hot or cold water
    • when stirring or shaking or not stirring or shaking
    • using coarse and fine salt

Content and Concepts: Please select a sub-category below.

Rates of dissolving (3½ hours)

toolsYou will need

Equipment

  • Computer
  • Data projector
  • Speakers
  • Internet connection

Powerpoints and Photocopies

Available on category pages
  • PowerPoints
  • Worksheets
  • Quiz

School Resources

  • Room temperature water
  • Hot water
  • Cold water (from a fridge)
  • Glasses (beakers)
  • Teaspoon
  • Coarse salt
  • Fine salt

Other

  • Stop watch (cell phone)
  • A3 or bigger sheets of paper
  • Crayons, kokis or coloured chalk
  • Old magazines (learners can use pictures for their posters)
  • Glue
  • Scissors
  • Salt (fine salt and coarse salt)