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| Equipment name | Sources | Suggestions for use | Notes |
|---|---|---|---|
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Salt
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| Table salt contains additives that may affect its properties, so ensure that plain salt is purchased. |
| Sand |
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| Sands from different locations are excelent for observation and comparison. |
| Sandpaper |
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| Seeds (such as broad bean, watercress, mustard) |
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| Most seeds sold for planting are coated with fungicide. Either ensure that children wash their hands after handling, or wash seeds well before using them in seed structure investigations. |
| Sea shells |
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| Soap |
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Sodium carbonate (Washing soda, Na2CO3.10H2O) |
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Sodium silicate (water glass) |
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| Egg preserver. Sodium silicate is used as the solution in which to grow crystal gardens. |
| Spaghetti, dried |
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| Starch |
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| Steel wool cleaning pads |
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| Use non-soapy rather than soapy pads. |
| Sticky tape |
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| Adhesive dries out on old stock. |
| Straws |
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| String/cotton |
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Sugar [C12H22O11] |
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| A range of sugars (coffee crystals, cubes, white, brown, raw, castor, icing) can be used. |