1. Original slide prepared for the iron particles Key: strong bonds between iron particles one iron particle iron particles held together by strong bonds

2. Original slide prepared for the iron particles iron particles are attracted to a magnet iron particles diagram

3. Original slide prepared for the sulphur particles Key: strong bonds between sulfur particles one sulphur particle sulphur particles held together by strong bonds

4. Original slide prepared for the sulfur particles sulphur particles are not attracted to a magnet sulphur particles diagram

5. Original slide prepared for the iron particles sulphur particles

6. Original slide prepared for the A mixture of iron and sulphur particles strong bonds between sulphur particles strong bonds between iron particles What’s this?

7. Original slide prepared for the A mixture of iron and sulphur particles A magnet attracts the iron particles but not the sulphur particles. The mixture is separated mixture diagram

8. Original slide prepared for the one sulphur particle one iron particle strong bonds between iron and sulphur particles What’s this? A compound between iron and sulphur particles

9. Original slide prepared for the strong bonds between iron and sulphur particles A compound between iron and sulphur particles The magnet cannot separate iron and sulphur particles in a compound compound diagram

10. Original slide prepared for the References Steve Lewis for the Royal Society of Chemistry Photographs by Peter Hollamby