Answer:
To separate raisins and flour, you can use a process called **sieving**. Sieving is a method of separating particles based on their size or particle size distribution. In this case, you can use a sieve or a fine mesh strainer to separate the larger raisins from the finer flour particles. Here's how you can do it:
**Materials Needed**:
1. Raisins and flour mixture
2. A sieve or fine mesh strainer
3. A bowl or container to collect the separated materials
**Procedure**:
1. Hold the sieve or fine mesh strainer over a bowl or container large enough to collect the separated materials.
2. Pour the mixture of raisins and flour into the sieve or strainer.
3. Gently shake or tap the sieve or strainer while holding it over the container. This will cause the smaller flour particles to pass through the mesh or holes, while the larger raisins will be retained on top of the sieve.
4. Continue shaking or tapping until you have separated as much flour from the raisins as possible. You can also use your fingers to help push the flour through the sieve if needed.
5. Once you have separated the two materials, you will have the raisins in the sieve and the flour in the container below.
6. Carefully remove the raisins from the sieve and transfer them to a separate container if needed.
By following this procedure, you can effectively separate the raisins from the flour based on their size difference. Sieving is a simple and efficient method for this type of separation, and it works well for a variety of mixtures where one component is significantly larger than the other.