← 3.5 Rates of Reactions

Surface area and rate

General Science · Grade 10 · about 40 minutes

A solid only reacts at its skin. Crush it, and you grow that skin without adding mass.

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.

  • 8 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