Separate Science Videos Physics Unit 3

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Dissolved Substances



This video explains the process of osmosis and how water molecules move through a semi-permeable membrane. It also goes through an example of an experiment involving osmosis.

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Exchange Surfaces


This video describes the key features of exchange surfaces in living things and how they are structured to allow maximum exchange of important materials. It also gives some key examples. Download the notes or exam question if you have subscribed.

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Diffusion & Active Transport


In this video you will learn what active transport is and what diffusion is. You should also be able to tell the difference between the two processes for moving substances in and out of cells.

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Sports Drinks Evaluation


This video is about sports drinks and how to evaluate the claims of sports drinks manufacturers about the usefulness of sports drinks.

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