Soluble or Insoluble worksheet - Free Printable

Absolutely! Let’s solve this science worksheet step by step. This activity is about solubility — whether a substance dissolves in water or not.

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## ✔ First, let’s define the key terms:

🟢 What does soluble mean?

> Soluble means a substance can dissolve in a liquid (like water) to form a clear, uniform mixture. The particles of the substance spread out evenly and disappear into the liquid.

🔴 What does insoluble mean?

> Insoluble means a substance *cannot* dissolve in a liquid. It stays as separate particles, may sink or float, and you can usually still see it after mixing.

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## 🧪 Now, let’s complete the table: “Does it dissolve?”

We’ll go material by material and decide if it dissolves in water.

| Material | Does it dissolve? |
|-------------------|-------------------|
| sand | ✘ No |
| chalk or candle | ✘ No |
| flour | ✘ No (it mixes but doesn’t truly dissolve — forms a suspension) |
| rice | ✘ No |
| coffee granules | ✔ Yes (they dissolve, especially instant coffee) |
| sugar | ✔ Yes |
| salt | ✔ Yes |

> 💡 Note: Flour and rice don’t dissolve — they may get soggy or suspend temporarily, but they don’t break down into molecules like sugar or salt do. Chalk and candle wax are also insoluble — they’re made of materials that repel water.

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## 📋 Final Classification Table

Now, let’s sort them into Soluble and Insoluble categories.

| Soluble | Insoluble |
|-------------------|-------------------|
| coffee granules | sand |
| sugar | chalk or candle |
| salt | flour |
| | rice |

> ✔ Soluble: Sugar, Salt, Coffee Granules
> ✘ Insoluble: Sand, Chalk/Candle, Flour, Rice

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## 🎉 Bonus Tip for Kids:
You can test this at home! Get a glass of water and try adding each item one at a time. Stir well and see what happens. If it disappears and the water looks clear (or just colored), it’s soluble. If you can still see bits floating or sinking, it’s insoluble!

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✔ Completed Worksheet Summary:

- Soluble = Can dissolve in water
- Insoluble = Cannot dissolve in water
- Soluble Materials: sugar, salt, coffee granules
- Insoluble Materials: sand, chalk or candle, flour, rice

Happy Children’s Day from Strauss Preparatory School — and happy experimenting! 🧪💧