← 1.2 Physical and chemical changes

Using the impurity effects

Integrated Science · Grade 8 · about 40 minutes

Four real uses of lowering a freezing point and raising a boiling point.

Sign in to read this lesson

Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.

  • 6 sections of explanation, worked examples and diagrams
  • 1 practice task with hints and worked answers
  • A quiz that marks itself as you go
  • Your progress kept across every subject you take
Sign in Create an account