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| Equipment name | Sources | Suggestions for use | Notes |
|---|---|---|---|
| Cabbage (red) |
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| Other plants, such as impatiens, hibiscus and beetroot, also provide coloured extracts that can be used as acid-base indicators. |
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Calcium chloride [Ca(Cl)2] |
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| Candles |
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| Birthday candles are often appropriate. Do not use candles for heating. |
| Cardboard tubes |
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| Cellophane |
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| Chalk |
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| Chocolate chippies |
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| Cling film |
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| Citric acid |
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| Clay |
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| Cobalt (II) nitrate [Co(NO3)2] |
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| Refer to Safety and Science, page 62. |
| Coloured sweets and inks |
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| Poison (1 teaspoon can kill a small child). Keep in locked cupboard. Refer to Safety and Science, pages 48, 61, and 62. |
| Copper sulfate [CuSO4] |
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| Poison (1 teaspoon can kill a small child). Keep in locked cupboard. Refer to Safety and Science, pages 48, 61, and 62. |
| Cordial powders |
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| Cornflour |
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(see pages 64–65 of Making Better Sense of the Material World for recipes) | |
| Cotton buds |
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| Ensure that each bud is used by only one child. |
| Crayons |
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