1. © www.chemsheets.co.uk KS3 022 04-Jan-14

2. Some substances dissolve in water e.g. salt white solid colourless solution

3. © www.chemsheets.co.uk KS3 022 04-Jan-14 Some substances dissolve in water e.g. copper sulfate coloured solid coloured solution

4. © www.chemsheets.co.uk KS3 022 04-Jan-14 Some substances dissolve in water e.g. nickel sulfate coloured solid coloured solution

5. © www.chemsheets.co.uk KS3 022 04-Jan-14 SOLUBLE Dissolves (e.g. salt in water) INSOLUBLE Does not dissolve (e.g. sand in water)

6. Is each substance SOLUBLE or INSOLUBLE in water? sugar flour gloss paint sand glass salt

7. When a substance dissolves: the solid “disappears” the solution is see-through the solution is coloured (if a coloured solid) or colourless (if a white solid) the solution is coloured (if a coloured solid) or colourless (if a white solid) When a substance does NOT dissolve: the solid is still visible in a colourless liquid or the liquid is cloudy

8. © www.chemsheets.co.uk KS3 022 04-Jan-14 SOLUTE Substance dissolving SOLUTION Solute dissolved in solvent SOLVENT Liquid the solute dissolves in

9. There are many solvents: e.g. water Saline solution (salt dissolved in water) © www.chemsheets.co.uk KS3 022 04-Jan-14

10. There are many solvents: e.g. ethanol Iodine tincture (iodine dissolved in ethanol) used as an antiseptic © www.chemsheets.co.uk KS3 022 04-Jan-14

11. Used to dissolve dirt in dry cleaning There are many solvents: e.g. perchloroethylene © www.chemsheets.co.uk KS3 022 04-Jan-14