BTEC Applied Science Unit 3: Diffusion and surface area (D24) - worksheet + answers

BTEC Applied Science Unit 3 Practicals Bundle | 11 Complete Lessons

The ten topic-area practicals for Unit 3 (Science Investigation Skills), plus a synoptic written-task practice lesson, in one download. Every practical comes in two versions: a **lab version** with method, apparatus list and a blank results table, and a **desk version** with a full set of realistic results already supplied. Teach it in the laboratory or at a desk with no technician time at all - the questions, graphs and mark schemes are the same either way. **Lessons included:** - D21 Written-task practice (synoptic: planning, data and evaluation) - D22 Enzymes and concentration - D23 Enzymes, temperature and pH - D24 Diffusion and surface area - D25 Osmosis in plant tissue - D26 Light and photosynthesis - D27 Plant distribution - D28 Energy content of fuels - D29 Comparing fuels - D30 Resistance of a wire - D31 I-V characteristics Covers all five topic areas - enzymes, diffusion of molecules, plants and their environment, energy content of fuels, and electrical circuits - across biology, chemistry and physics. **Every lesson includes:** - Lab and desk versions, each with student and teacher copies, in PDF and editable Word - Teacher notes with lesson flow, misconceptions and practical/safety notes - Retrieval starter, structured tasks with data tables and printed graph grids - Check for Understanding quiz with a confidence self-assessment - Written-task practice ending with a levels-marked 6-mark question and indicative content Consistent layout and structure across every lesson, so students always know what to expect. All questions are original. Safety note: the lab versions include practical guidance, but they are not a substitute for your own school or CLEAPSS risk assessment. The twenty investigation-skills lessons (D01-D20) are available as a separate Unit 3 Skills bundle. Written for the Pearson BTEC Level 3 Nationals in Applied Science. Not endorsed by Pearson. Single-school licence.